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    Mechanisms for Enhanced Transmission and Reception of Physical Random Access Channel
    1.
    发明申请
    Mechanisms for Enhanced Transmission and Reception of Physical Random Access Channel 审中-公开

    公开(公告)号：US20200187269A1

    公开(公告)日：2020-06-11

    申请号：US16791157

    申请日：2020-02-14

    Applicant: Apple Inc.

    Inventor： Tarik Tabet ,  Youngjae Kim ,  Syed Aon Mujtaba

    IPC: H04W74/08 ,  H04W72/04 ,  H04W52/34 ,  H04L1/18 ,  H04J13/00

    Abstract: Enhanced random access procedures for link-budget-limited user equipment (UE) devices are disclosed. A user equipment device may transmit a first message containing a Physical Random Access Channel (PRACH). The PRACH contains instances of a Zadoff-Chu sequence, and may be transmitted repeatedly as part of a single random attempt, to facilitate correlation data combining at the base station. The available Zadoff-Chu sequences may be partitioned among a plurality of sets, each set being associated with a respective Doppler shift range (or frequency hop pattern or time repetition pattern). A UE device may signal Doppler shift (or other information) to the base station by selection of one of the sets. The first PRACH transmission and the following PRACH transmission may occur in consecutive subframes. A UE device may select from a special set of Zadoff-Chu sequences (different from a conventional set of sequences), to signal its status as a link-budget-limited device.

    Modulation and Coding Scheme (MCS) Recovery based on CQI Offset
    5.
    发明申请
    Modulation and Coding Scheme (MCS) Recovery based on CQI Offset 有权
    基于CQI偏移的调制和编码方案（MCS）恢复

    公开(公告)号：US20140003260A1

    公开(公告)日：2014-01-02

    申请号：US13664283

    申请日：2012-10-30

    Applicant: APPLE INC.

    Inventor： Tarik Tabet ,  Navid Damji ,  Kee-bong Song ,  S. Aon Mujtaba ,  Youngjae Kim ,  Johnson O. Sebeni ,  Yuchul Kim

    IPC: H04W24/00

    CPC classification number: H04W24/10 ,  H04L1/0003 ,  H04L1/0026 ,  H04L43/0823 ,  H04L47/10 ,  H04W72/085 ,  H04W72/1231 ,  H04W72/1284

    Abstract: Manipulating modulation and coding scheme (MCS) allocation after a communication interruption. A UE device may resume communications with a BS after a communication interruption. First channel quality information may be generated and transmitted to the BS. A first MCS allocation, which may be based at least in part on the first channel quality information, may be received from the BS. Second channel quality information may be generated and transmitted to the BS, where the second channel quality information is modified by an offset configured to modify a second MCS allocation.

    Abstract translation: 在通信中断后操纵调制和编码方案（MCS）分配。 在通信中断之后，UE设备可以恢复与BS的通信。 可以生成第一信道质量信息并将其发送到BS。 可以从BS接收至少部分地基于第一信道质量信息的第一MCS分配。 可以生成第二信道质量信息并将其发送到BS，其中通过被配置为修改第二MCS分配的偏移来修改第二信道质量信息。

    Enhanced LTE UL HARQ feedback indication for power saving and range improvement
    6.
    发明授权
    Enhanced LTE UL HARQ feedback indication for power saving and range improvement 有权

    公开(公告)号：US12047177B2

    公开(公告)日：2024-07-23

    申请号：US17157469

    申请日：2021-01-25

    Applicant: Apple Inc.

    Inventor： Tarik Tabet ,  Youngjae Kim ,  Syed Aon Mujtaba

    IPC: H04L1/16 ,  H04L1/1607 ,  H04L1/18 ,  H04L1/1812 ,  H04L1/1867 ,  H04L5/00 ,  H04W72/23

    CPC classification number: H04L1/1812 ,  H04L1/1657 ,  H04L1/1671 ,  H04L1/1896 ,  H04L5/0055 ,  H04L5/006 ,  H04W72/23

    Abstract: Mobile devices, base stations, and/or relay stations may implement a method for an improved and reliable automatic repeat request feedback indication. A mobile device (UE) may establish communication within a wireless network, and indicate to the network that the UE is a special type device, e.g. a constrained device. The network (base station) may then not send an indication on a physical indicator channel to the UE when certain conditions are met, and instead, the mobile device may interpret control information received from the network on a physical control channel as a negative acknowledgment indication corresponding to an automatic repeat request from the network. The UE may then perform a retransmission according to the interpreted control information. A new control information format may be used to further define how the network and UE implement the automatic repeat request process, to reduce the total number of bits required in the control information.

    METHODS AND APPARATUS FOR ADAPTIVE RECEIVER DIVERSITY IN A WIRELESS NETWORK
    9.
    发明申请
    METHODS AND APPARATUS FOR ADAPTIVE RECEIVER DIVERSITY IN A WIRELESS NETWORK 有权
    无线网络中自适应接收器多样性的方法和设备

    公开(公告)号：US20130288624A1

    公开(公告)日：2013-10-31

    申请号：US13779661

    申请日：2013-02-27

    Applicant: APPLE INC.

    Inventor： Syed Aon Mujtaba ,  Xiaowen Wang ,  Tarik Tabet ,  Kee-Bong Song ,  Youngjae Kim ,  Yuchul Kim

    IPC: H04B7/08

    CPC classification number: H04B7/0814 ,  H04B7/0817 ,  H04B7/0871 ,  H04W52/0209 ,  Y02D70/1262 ,  Y02D70/444

    Abstract: Apparatus and methods for implementing “intelligent” receive diversity management in e.g., a mobile device. In one implementation, the mobile device includes an LTE-enabled UE, and the intelligent diversity management includes selectively disabling receive diversity (RxD) in that device upon meeting a plurality of criteria including (i) a capacity criterion, and (ii) a connectivity criterion. In one variant, the capacity criterion includes ensuring that an achievable data rate associated with a single Rx (receive) chain is comparable to that with RxD.

    Abstract translation: 在例如移动设备中实现“智能”接收分集管理的装置和方法。 在一个实现中，移动设备包括启用LTE的UE，并且智能分集管理包括在满足多个标准时选择性地禁用该设备中的接收分集（RxD），包括（i）容量标准，和（ii）连接 标准。 在一个变型中，容量标准包括确保与单个Rx（接收）链相关联的可实现的数据速率与RxD的数据速率相当。

    Enhanced LTE UL HARQ Feedback Indication for Power Saving and Range Improvement
    10.
    发明申请
    Enhanced LTE UL HARQ Feedback Indication for Power Saving and Range Improvement 有权

    公开(公告)号：US20210152291A1

    公开(公告)日：2021-05-20

    申请号：US17157469

    申请日：2021-01-25

    Applicant: Apple Inc.

    Inventor： Tarik Tabet ,  Youngjae Kim ,  Syed Aon Mujtaba

    IPC: H04L1/18 ,  H04L1/16 ,  H04L5/00 ,  H04W72/04

    Abstract: Mobile devices, base stations, and/or relay stations may implement a method for an improved and reliable automatic repeat request feedback indication. A mobile device (UE) may establish communication within a wireless network, and indicate to the network that the UE is a special type device, e.g. a constrained device. The network (base station) may then not send an indication on a physical indicator channel to the UE when certain conditions are met, and instead, the mobile device may interpret control information received from the network on a physical control channel as a negative acknowledgment indication corresponding to an automatic repeat request from the network. The UE may then perform a retransmission according to the interpreted control information. A new control information format may be used to further define how the network and UE implement the automatic repeat request process, to reduce the total number of bits required in the control information.

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