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    Multi-stage downlink grant for multiple PDSCH
    192.
    发明授权
    Multi-stage downlink grant for multiple PDSCH 有权

    公开(公告)号：US11617181B2

    公开(公告)日：2023-03-28

    申请号：US17170810

    申请日：2021-02-08

    Applicant: QUALCOMM Incorporated

    Inventor： Qingjiang Tian ,  Xiaoxia Zhang ,  Jing Sun ,  Zhifei Fan ,  Wooseok Nam ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Tao Luo

    IPC: H04W72/04 ,  H04L1/1812 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/14

    Abstract: Aspects of a multi-stage multi-PDSCH grant are provided which allow a UE to obtain data in a downlink data burst with more scheduling flexibility than single-stage multi-PDSCH grants. A base station provides the UE in a downlink control channel a first portion of downlink control information which indicates a plurality of downlink data transmissions. The UE monitors the downlink control channel for the first portion of downlink control information. Afterwards, the base station sends to the UE a second portion of the downlink control information including parameters for one of the downlink data transmissions. The base station may also send the UE a third portion of the downlink control information including additional parameters for the downlink data transmission. After the UE obtains the portions, the UE decodes the one of the downlink data transmissions indicated at least in part by the first and second portion of the downlink control information.

    Spatial LBT with broadcast/multicast reception
    193.
    发明授权
    Spatial LBT with broadcast/multicast reception 有权

    公开(公告)号：US11589387B2

    公开(公告)日：2023-02-21

    申请号：US15948390

    申请日：2018-04-09

    Applicant: QUALCOMM Incorporated

    Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Seyed Ali Akbar Fakoorian ,  Taesang Yoo

    IPC: H04W74/08 ,  H04L12/18 ,  H04W4/06 ,  H04B7/06

    Abstract: Spatial listen before talk (LBT) with broadcasting or multicasting reception is disclosed. Aspects of the disclosure provide for managing spatial LBT transmissions between broadcast communication nodes and neighboring cells. In one aspect, the broadcast transmitter transmits a preamble that identifies the broadcast transmission durations and the non-broadcast durations in the upcoming transmit opportunity. The potential interferer would read the preamble and yield any transmissions during the broadcast durations. Additional aspects provide for a periodic broadcast clear-to-send (CTS) signal transmitted by the broadcast receivers. The interferer may use the broadcast CTS to perform spatial LBT during the broadcast durations. Further aspects allow the broadcast receivers to determine when potential interferers would cause interference above a threshold. In such circumstances, the broadcast receivers would send the CTS to allow the interferer to perform spatial LBT during the broadcast durations.

    Spatial listen before talk by precoded request to send and clear to send via whitening
    198.
    发明授权
    Spatial listen before talk by precoded request to send and clear to send via whitening 有权

    公开(公告)号：US11363634B2

    公开(公告)日：2022-06-14

    申请号：US16811613

    申请日：2020-03-06

    Applicant: QUALCOMM INCORPORATED

    Inventor： Zhifei Fan ,  Taesang Yoo ,  Xiaoxia Zhang ,  Seyed Ali Akbar Fakoorian

    IPC: H04W74/08 ,  H04W16/14 ,  H04B7/0456

    Abstract: Methods, systems, and devices for wireless communication are described. A first wireless device may receive a clear to send signal based precoded based at least in part on a receive filter at a second wireless device. The first wireless device may calculate a transmit precoder based at least in part on the clear to send signal. For example, the first wireless device may calculate a whitening filter and a second filter based at least in part on the clear to send signal. The first wireless device may transmit a request to send signal precoded by the transmit precoder to initiate communications with a third wireless device without significantly interfering with ongoing communications at the second wireless device.

    FREQUENCY SELECTIVE PHASE TRACKING REFERENCE SIGNAL (PTRS) ALLOCATION
    199.
    发明申请
    FREQUENCY SELECTIVE PHASE TRACKING REFERENCE SIGNAL (PTRS) ALLOCATION 有权

    公开(公告)号：US20220109537A1

    公开(公告)日：2022-04-07

    申请号：US17482100

    申请日：2021-09-22

    Applicant: QUALCOMM Incorporated

    Inventor： Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Zhifei Fan ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun ,  Wooseok Nam

    IPC: H04L5/00 ,  H04W72/04

    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for enabling user equipment (UE) and a base station (BS) to communicate using a set of frequency resources in which a subset of frequency resources include a phase tracking reference signal (PTRS). In one aspect, the UE may measure the PTRS in the subset of frequency resources, and select a phase noise compensation that is used to demodulate a communication from the BS. The subset of frequency resources may be selected from the set frequency resources based on channel conditions of different subsets of frequency resources. The BS may provide an indication of the selected subset of frequency resources to the UE, such as in control information that schedules the communication from the BS.

    Spatial listen before talk
    200.
    发明授权
    Spatial listen before talk 有权

    公开(公告)号：US11284407B2

    公开(公告)日：2022-03-22

    申请号：US16796758

    申请日：2020-02-20

    Applicant: QUALCOMM Incorporated

    Inventor： Seyed Ali Akbar Fakoorian ,  Xiaoxia Zhang ,  Taesang Yoo ,  Zhifei Fan

    IPC: H04W72/08 ,  H04B7/0426 ,  H04B7/08 ,  H04B7/0456 ,  H04L5/00

    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a precoded reference signal to prevent interference with an incoming signal from a base station. The UE may determine a precoder for the reference signal based at least in part on a whitening matrix. In some examples, the UE may determine the precoder based at least in part on the whitening matrix and an effective channel between the base station and the UE. The precoded reference signal may be used by devices in other wireless communications systems to avoid interfering with a signal being received by the UE. In some examples, the UE may alternatively or additionally transmit an indication of the number of additional layers of the link between the UE and the base station that may be nulled out for a second link.

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