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    JOINT CHANNEL ESTIMATION FOR MULTIPLE DOWNLINK TRANSMISSIONS
    121.
    发明公开
    JOINT CHANNEL ESTIMATION FOR MULTIPLE DOWNLINK TRANSMISSIONS 审中-公开

    公开(公告)号：US20230344677A1

    公开(公告)日：2023-10-26

    申请号：US18129672

    申请日：2023-03-31

    Applicant: Apple Inc.

    Inventor： Chunxuan YE ,  Haitong SUN ,  Hong HE ,  Yushu ZHANG ,  Wei ZENG ,  Seyed Ali Akbar FAKOORIAN ,  Sigen YE ,  Chunhai YAO ,  Dawei ZHANG ,  Weidong YANG

    IPC: H04L25/02 ,  H04L5/00 ,  H04W72/0446

    CPC classification number: H04L25/0204 ,  H04L5/0051 ,  H04W72/0446

    Abstract: Mechanisms are provided for a user equipment (UE) to perform joint channel estimation for multiple downlink transmissions. A method performed by a UE can include reporting, to a base station, a capability of the lIE to perform joint channel estimation, receiving a configuration for joint channel estimation, where the configuration includes a time domain window (TDW) indicating a duration of the joint channel estimation, and further determining whether to perform the joint channel estimation. Based on a determination to perform the joint channel estimation, the method can include determining an actual time domain window within the TDW for performing the joint channel estimation, and performing the joint channel estimation within the actual time domain window for a first physical downlink shared channel (PDSCH) transmission based on a first demodulation reference signals (DMRS), and a second PDSCH transmission based on a second DMRS.

    DOWNLINK (DL) AND UPLINK (UL) SCHEDULING FOR TRANSMISSION ABOVE 52.6 GHZ
    122.
    发明公开
    DOWNLINK (DL) AND UPLINK (UL) SCHEDULING FOR TRANSMISSION ABOVE 52.6 GHZ 审中-公开

    公开(公告)号：US20230239846A1

    公开(公告)日：2023-07-27

    申请号：US17439680

    申请日：2020-10-16

    Applicant: Apple Inc.

    Inventor： Haitong SUN ,  Dawei ZHANG ,  Huaning NIU ,  Oghenekome OTERI ,  Chunhai YAO ,  Chunxuan YE ,  Hong HE ,  Sigen YE ,  Weidong YANG ,  Yushu ZHANG ,  Wei ZENG

    IPC: H04W72/0453 ,  H04W72/23 ,  H04W72/02

    CPC classification number: H04W72/0453 ,  H04W72/23 ,  H04W72/02

    Abstract: Some aspects of this disclosure relate to apparatuses and methods for implementing downlink and uplink scheduling in communication above 52.6 GHz. For example, some aspects of this disclosure relate to a base station. The base station includes a transceiver configured to communicate over a wireless network with a user equipment (UE) and a processor communicatively coupled to the transceiver. The processor determines that the communication between the base station and the UE is in a frequency range above 52.6 GHz. In response to the determination, the processor disables a frequency main resource assignment (FDRA), modifies a Resource Block Group (RBG) size, or modifies a Resource Indication Value (RIV) determination. The processor generates a Downlink Channel Indicator (DCI) based at least on one or more of the disabled FDRA, the modified RBG size, or the modified RIV determination. The processor transmits, using the transceiver, the DCI to the UE.

    Systems and Methods for PDCCH Repetition Reception
    124.
    发明公开
    Systems and Methods for PDCCH Repetition Reception 审中-公开

    公开(公告)号：US20230171031A1

    公开(公告)日：2023-06-01

    申请号：US17593326

    申请日：2021-01-14

    Applicant: Apple Inc.

    Inventor： Yushu ZHANG ,  Chunhai YAO ,  Dawei ZHANG ,  Haitong SUN ,  Hong HE ,  Oghenekome OTERI ,  Sigen YE ,  Wei ZENG ,  Weidong YANG

    IPC: H04L1/08 ,  H04W72/23

    CPC classification number: H04L1/08 ,  H04W72/23

    Abstract: A user equipment (UE) monitors a Physical Downlink Control Channel (PDCCH). The UE receives a configuration for a physical downlink control channel (PDCCH) including repetitions for PDCCH candidates comprising first PDCCH data, wherein the PDCCH candidates are repeated across multiple durations of a DL resource grid, detects, based on a repetition detection scheme, each of the PDCCH candidates and combines soft bits from each of the PDCCH candidates, wherein the combined soft bits are jointly decoded to determine the first PDCCH data and calculates a number of blind decodes (BDs) for the durations of the DL resource grid carrying the PDCCH candidates, wherein at least one BD value for the PDCCH candidates is scaled by a scaling factor for the calculation of the number of BDs.

    SYSTEM AND METHOD FOR HIGH SPEED DOPPLER COMPENSATION IN A CELLULAR ENVIRONMENT
    126.
    发明公开
    SYSTEM AND METHOD FOR HIGH SPEED DOPPLER COMPENSATION IN A CELLULAR ENVIRONMENT 审中-公开

    公开(公告)号：US20230155760A1

    公开(公告)日：2023-05-18

    申请号：US17441962

    申请日：2020-08-05

    Applicant: Apple Inc.

    Inventor： Haitong SUN ,  Wei ZENG ,  Yushu ZHANG ,  Hong HE ,  Oghenekome OTERI ,  Sigen YE ,  Weidong YANG ,  Chunxuan YE ,  Chunhai YAO ,  Dawei ZHANG

    IPC: H04L5/00 ,  H04B7/01

    CPC classification number: H04L5/0048 ,  H04L5/0035 ,  H04B7/01

    Abstract: Methods and apparatuses are disclosed for calculating and compensating for Doppler shift in a high-speed environment. When in a high-speed environment, Doppler shifts on a transmitted radio frequency signal can become extremely large, which may make it difficult or even impossible for a receiving device to accurately decipher the signal. Therefore, embodiments of the present disclosure describe how tracking reference signals can be transmitted from multiple transmission/reception points, and processed by the UE. For example, the TRS transmitted from the TRP can be enhanced to allow for TRS information from two different TRPs. Additionally, or alternatively, a flag can be set within TRS information that identifies it as having originated from either a first TRP or a second TRP. Additionally, the UE can calculate Doppler shift information and report that information back to the base station in a report message, such as an SRS message. In this manner, the base station can precompensate for the Doppler shift.

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