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    Power headroom reporting for shortened transmission time intervals
    32.
    发明授权
    Power headroom reporting for shortened transmission time intervals 有权

    公开(公告)号：US11284357B2

    公开(公告)日：2022-03-22

    申请号：US16476375

    申请日：2018-01-31

    Applicant: Apple Inc.

    Inventor： Jie Cui ,  Hong He ,  Yang Tang ,  Yuan Zhu ,  Shuang Tian

    IPC: H04W52/36 ,  H04W72/04 ,  H04L5/00 ,  H04W52/22

    Abstract: A UE may estimate the power headroom value when using shortened Transmission Time Intervals (sTTI). In one implementation, the power headroom value may be calculated based on an estimation of the UE transmission power over two or seven OFDM symbols. Alternatively or additionally, the power headroom value may be calculated based on an estimation of the UE transmission power over the period of an sTTI. Alternatively or additionally, the power headroom value may be calculated based on an average of the UE transmission power over multiple sTTI periods in a subframe. Alternatively or additionally, the power headroom value may be calculated based on a maximum or minimum of the UE transmission power measured over multiple sTTI periods in a subframe. Alternatively or additionally, the power headroom value may be calculated based on UE transmission power measured in the first or the last sTTI period in a subframe.

    Reference signals for initial acquisition in 5G systems
    33.
    发明授权
    Reference signals for initial acquisition in 5G systems 有权

    公开(公告)号：US11201657B2

    公开(公告)日：2021-12-14

    申请号：US16881212

    申请日：2020-05-22

    Applicant: Apple Inc.

    Inventor： Gang Xiong ,  Huaning Niu ,  Yushu Zhang ,  Jong-Kae Fwu ,  Yuan Zhu ,  Ralf Matthias Bendlin

    IPC: H04B7/06 ,  H04J11/00 ,  H04B7/08 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W84/04

    Abstract: Disclosed herein are apparatuses, systems, and methods for reference signal design for initial acquisition, by receiving a first primary synchronization signal (PSS) and a first secondary synchronization signal (SSS) from a first transmit (Tx) beam, in first contiguous orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A UE can receive at least a second PSS and a second SSS from a second Tx beam in contiguous OFDM symbols of the downlink subframe. A UE can then detect beamforming reference signals (BRSs) corresponding to the first Tx beam and the second Tx beam, based on identification of physical cell ID information and timing information processed from the first PSS, the second PSS, the first SSS, and the second SSS. The UE can select the first Tx beam or the second Tx beam that was received with the highest power, based on the BRSs. Other embodiments are described.

    Managing aspects of receive beamforming
    34.
    发明授权
    Managing aspects of receive beamforming 有权

    公开(公告)号：US11159213B2

    公开(公告)日：2021-10-26

    申请号：US15747010

    申请日：2015-12-26

    Applicant: Apple Inc.

    Inventor： Yushu Zhang ,  Yuan Zhu ,  Gang Xiong ,  Ralf Bendlin ,  Jong-Kae Fwu

    IPC: H04B7/06 ,  H04B7/0408 ,  H04B7/0456 ,  H04L5/00 ,  H04W84/04

    Abstract: Apparatus, systems, and methods to implement receive beamforming in communication systems are described. In one example, apparatus of an evolved Node B (eNB) comprising processing circuitry to receive, from a user equipment (UE), a beamforming reference signal received power (BRS-RP) measurement and in response to the BRS-RP measurement, configure a downlink (DL) transmit (Tx) beamforming and a receiving (Rx) beamforming process on the UE. Other examples are also disclosed and claimed.

    USER EQUIPMENT AND METHODS FOR PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) RESOURCE ALLOCATION AND COMMUNICATION
    35.
    发明申请
    USER EQUIPMENT AND METHODS FOR PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) RESOURCE ALLOCATION AND COMMUNICATION 有权

    公开(公告)号：US20210328744A1

    公开(公告)日：2021-10-21

    申请号：US17365685

    申请日：2021-07-01

    Applicant: Apple Inc.

    Inventor： Wenting Chang ,  Yuan Zhu ,  Yushu Zhang ,  Gang Xiong ,  Seunghee Han

    IPC: H04L5/00 ,  H04L1/00 ,  H04W28/02 ,  H04W72/04 ,  H04W72/12

    Abstract: Embodiments of a User Equipment (UE), an Evolved Node-B (eNB), and methods for communication of uplink messages are generally described herein. The UE may receive, from an eNB, one or more downlink control messages that may indicate an allocation of PUCCH channel resources. The UE may transmit an uplink control message in at least a portion of the allocated PUCCH channel resources. When the PUCCH channel resources are allocated according to an edge configuration, the PUCCH channel resources may be restricted to a lower edge portion and an upper edge portion of the network channel resources. When the PUCCH channel resources are allocated according to a distributed configuration, the PUCCH channel resources may include one or more middle portions of the network channel resources. The middle portions may be exclusive to the lower edge and upper edge portions.

    Transmission of phase tracking reference signals (PT-RS)
    36.
    发明授权
    Transmission of phase tracking reference signals (PT-RS) 有权

    公开(公告)号：US11102789B2

    公开(公告)日：2021-08-24

    申请号：US16323465

    申请日：2017-08-07

    Applicant: APPLE INC.

    Inventor： Yushu Zhang ,  Yuhang Guo ,  Gang Xiong ,  Hua Li ,  Yuan Zhu

    IPC: H04W72/08 ,  H04L5/00 ,  H04W72/04

    Abstract: Technology for a user equipment (UE) operable to decode a resource mapping pattern of a phase tracking reference signal (PT-RS) received from a base station in a wireless network is disclosed. The UE can decode control signaling received in a downlink from the base station. The control signaling can indicate a resource mapping pattern for a PT-RS. The UE can identify the resource mapping pattern for the PT-RS based on the control signaling received from the base station. The UE can encode one or more PT-RS for transmission to the base station in an uplink in accordance with the resource mapping pattern for the PT-RS.

    Scheduling request for standalone deployment of a system using beamforming
    37.
    发明授权
    Scheduling request for standalone deployment of a system using beamforming 有权

    公开(公告)号：US11096195B2

    公开(公告)日：2021-08-17

    申请号：US16071439

    申请日：2016-08-03

    Applicant: APPLE INC.

    Inventor： Gang Xiong ,  Wenting Chang ,  Huaning Niu ,  Yushu Zhang ,  Yuan Zhu

    IPC: H04W72/12 ,  H04W76/27 ,  H04B7/06 ,  H04B7/08 ,  H04L5/00 ,  H04L27/26

    Abstract: Technology for a user equipment (UE) using a self-contained scheduling resource to communicate with an eNodeB within a wireless communication network is disclosed. The UE can select, at the UE, a selected eNodeB transmission (Tx) beam and a selected UE reception (Rx) beam based on a highest power beamforming reference signal (BRS) received power (BRS-RP). The UE can signal a transceiver of the UE to transmit to the eNodeB a scheduling request (SR), using the selected Rx beam, on a scheduling request (SR) resource in a self-contained subframe according to a time and frequency location of the selected eNodeB Tx beam. The UE can process an advanced physical downlink control channel (xPDCCH), received from the eNodeB, for an uplink (UL) grant using the selected UE RX beam.

    ACK/NACK signals for next generation LTE devices and systems
    39.
    发明授权
    ACK/NACK signals for next generation LTE devices and systems 有权

    公开(公告)号：US10958386B2

    公开(公告)日：2021-03-23

    申请号：US16408223

    申请日：2019-05-09

    Applicant: Apple Inc.

    Inventor： Gang Xiong ,  Huaning Niu ,  Hooman Shirani-Mehr ,  Yushu Zhang ,  Yuan Zhu

    IPC: H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04L27/20

    Abstract: Devices and methods of providing symmetric UL and DL ACK/NACKs is generally described. UL ACK/NACKs of different UEs are multiplexed and received by a UE with a PUSCH. The receiving UE in response transmits the DL ACK/NACK. The ACK/NACK may be transmitted in a localized or distributed manner among subbands that may be adjacent or each may have blocks separated by blocks of a different subband. The ACK and NACK may use independent resources or the NACK may not be transmitted on the single ACK/NACK resource, the lack of an ACK serving as a NACK. The ACK/NACK may be transmitted using a beamforming weight shaped by the received PUSCH/PDSCH. The ACK/NACK symbol may be located in the first symbol, adjacent to the PUSCH/PDSCH, or at the end of a TTI. If adjacent, the UL grant or UL assignment may indicate whether the ACK/NACK resource is used by the PUSCH/PDSCH.

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