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    Method and system for diversity using orthogonal frequency/division multiplexing
    21.
    发明授权
    Method and system for diversity using orthogonal frequency/division multiplexing 有权
    使用正交频分复用的分集方法和系统

    公开(公告)号：US09037093B2

    公开(公告)日：2015-05-19

    申请号：US13656311

    申请日：2012-10-19

    Applicant: Apple Inc.

    Inventor： Adrian Smith ,  Xiao-Dong Li ,  David Steer ,  Kelvin Kar-Kin Au ,  Robert Novak ,  Mark Earnshaw

    IPC: H04B17/00 ,  H04B7/185 ,  H04L5/02

    CPC classification number: H04L27/2646 ,  H04B7/18534 ,  H04L5/0007 ,  H04L5/023 ,  H04W56/0045

    Abstract: A method and system for achieving a link budget improvement in a diverse OFDM radio system by addressing the timing misalignment issue that can occur due to the differences in propagation time in signals between mobile stations and Radio Access Nodes. Timing misalignment is shared or split between the primary path to a primary Radio Access Node and a diverse path to a diverse Radio Access Node. The relative timing offsets between mobile stations are adjusted, the mobile stations are grouped into zones using a variety of different grouping techniques, and the transmission for each mobile station is scheduled, using one or more of a variety of scheduling techniques.

    Abstract translation: 一种用于通过解决由于移动台和无线电接入节点之间的信号中的传播时间差异而可能发生的定时未对准问题来在多个OFDM无线电系统中实现链路预算改进的方法和系统。 在主无线接入节点的主要路径和到各种无线接入节点的不同路径之间共享或分割定时偏移。 调整移动站之间的相对定时偏移，使用各种不同的分组技术将移动站分组成区域，并且使用各种调度技术中的一种或多种调度每个移动站的传输。

    Method and System for Providing an Uplink Structure and Minimizing Pilot Signal Overhead in a Wireless Communication Network
    22.
    发明申请
    Method and System for Providing an Uplink Structure and Minimizing Pilot Signal Overhead in a Wireless Communication Network 有权
    在无线通信网络中提供上行链路结构和最小化导频信号开销的方法和系统

    公开(公告)号：US20140161068A1

    公开(公告)日：2014-06-12

    申请号：US14177716

    申请日：2014-02-11

    Applicant: Apple Inc.

    Inventor： Sophie Vrzic ,  Jun Yuan ,  Mo-Han Fong ,  Robert Novak ,  Dong-Sheng Yu ,  Jianglei Ma

    IPC: H04W72/04 ,  H04W74/08

    CPC classification number: H04W72/0446 ,  H04J11/00 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0055 ,  H04L27/2602 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/004 ,  H04W74/0833 ,  H04W74/0866 ,  H04W84/12 ,  H04W88/085 ,  H04W88/12

    Abstract: A method and system are provided having an uplink control structure and a pilot signal having minimal signal overhead for providing channel estimation and data demodulation in a wireless communication network. The uplink control structures enable mobile terminals to communicate with corresponding base stations to perform various functions including obtaining initial system access, submitting a bandwidth request, triggering a continuation of negotiated service, or providing a proposed allocation re-configuration header. A dedicated random access channel is provided to communicatively couple the base station and the mobile terminal so that the mobile terminal can select a random access signaling identification. A resource request is received at the base station to uplink resource information from the mobile terminal and an initial access information request is received from the mobile terminal to configure the base station connection. Pilot signals with varying density configurations are provided to include low density symbol patterns for multiple contiguous resource blocks and high density symbol patterns for single resource blocks.

    Abstract translation: 提供一种方法和系统，其具有上行链路控制结构和具有最小信号开销的导频信号，用于在无线通信网络中提供信道估计和数据解调。 上行链路控制结构使得移动终端能够与相应的基站进行通信，以执行各种功能，包括获得初始系统访问，提交带宽请求，触发协商服务的继续或提供建议的分配重配置报头。 提供专用随机接入信道以通信地耦合基站和移动终端，使得移动终端可以选择随机接入信令标识。 在基站接收资源请求以从移动终端上行资源信息，并且从移动终端接收初始访问信息请求以配置基站连接。 提供具有不同密度配置的导频信号以包括用于多个连续资源块的低密度符号模式和用于单个资源块的高密度符号模式。

    Methods and systems for HARQ protocols
    24.
    发明授权
    Methods and systems for HARQ protocols 有权

    公开(公告)号：US11515969B2

    公开(公告)日：2022-11-29

    申请号：US17215623

    申请日：2021-03-29

    Applicant: Apple Inc.

    Inventor： Mo-han Fong ,  Sophie Vrzic ,  Robert Novak ,  Jun Yuan ,  Dong-Sheng Yu

    IPC: H04W72/00 ,  H04L1/18 ,  H04W72/04 ,  H04W72/12 ,  H04L5/14 ,  H04L5/00 ,  H04L1/00 ,  H04L27/26 ,  H04W88/04 ,  H04W88/06 ,  H04W28/04

    Abstract: Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. In some embodiments of the invention, specific control information is signalled from a base station to a mobile station to enable RAS-HARQ operation. In some embodiments of the invention, retransmission signaling in included as part of regular unicast signaling used for both first transmission and retransmissions. In some embodiments of the invention, a 3-state acknowledgement channel and associated error recovery operation enables the base station and mobile station to recover from control signaling error and reduce packet loss.

    Transmitter time adjustments for groups of receivers
    25.
    发明授权
    Transmitter time adjustments for groups of receivers 有权

    公开(公告)号：US10554465B2

    公开(公告)日：2020-02-04

    申请号：US16415111

    申请日：2019-05-17

    Applicant: Apple Inc.

    Inventor： Adrian Smith ,  Xiao-Dong Li ,  David Steer ,  Kelvin Kar-Kin Au ,  Robert Novak ,  Mark Earnshaw

    IPC: H04L27/26 ,  H04L5/02 ,  H04B7/185 ,  H04L5/00 ,  H04W56/00

    Abstract: A method and system for achieving a link budget improvement in a diverse OFDM radio system by addressing the timing misalignment issue that can occur due to the differences in propagation time in signals between mobile stations and Radio Access Nodes. Timing misalignment is shared or split between the primary path to a primary Radio Access Node and a diverse path to a diverse Radio Access Node. The relative timing offsets between mobile stations are adjusted, the mobile stations are grouped into zones using a variety of different grouping techniques, and the transmission for each mobile station is scheduled, using one or more of a variety of scheduling techniques.

    Transmitter Time Adjustments for Groups of Receivers
    26.
    发明申请
    Transmitter Time Adjustments for Groups of Receivers 审中-公开

    公开(公告)号：US20190273645A1

    公开(公告)日：2019-09-05

    申请号：US16415111

    申请日：2019-05-17

    Applicant: Apple Inc.

    Inventor： Adrian Smith ,  Xiao-Dong Li ,  David Steer ,  Kelvin Kar-Kin Au ,  Robert Novak ,  Mark Earnshaw

    IPC: H04L27/26 ,  H04W56/00 ,  H04B7/185 ,  H04L5/02 ,  H04L5/00

    Abstract: A method and system for achieving a link budget improvement in a diverse OFDM radio system by addressing the timing misalignment issue that can occur due to the differences in propagation time in signals between mobile stations and Radio Access Nodes. Timing misalignment is shared or split between the primary path to a primary Radio Access Node and a diverse path to a diverse Radio Access Node. The relative timing offsets between mobile stations are adjusted, the mobile stations are grouped into zones using a variety of different grouping techniques, and the transmission for each mobile station is scheduled, using one or more of a variety of scheduling techniques.

    Methods and Systems for Resource Allocation
    27.
    发明申请
    Methods and Systems for Resource Allocation 审中-公开

    公开(公告)号：US20190044671A1

    公开(公告)日：2019-02-07

    申请号：US16157413

    申请日：2018-10-11

    Applicant: Apple Inc.

    Inventor： Robert Novak ,  Mo-Han Fong ,  Hang Zhang ,  Sophie Vrzic

    IPC: H04L5/00 ,  H04L1/18 ,  H04W72/12 ,  H04W52/48 ,  H04W72/04 ,  H04W52/34

    Abstract: Various methods and systems are provided for allocating time-frequency resources for downlink (DL) and uplink (UL) communications between base stations and mobile stations. Different forms of resource allocation messages including combinations of bitmaps and bitfields provide additional information about the resources and/or how they are assigned. In some implementations the resource allocation messages enable reduced overhead, which may ultimately improve transmission rates and/or the quality of transmissions.

    Methods and Systems for HARQ Protocols
    28.
    发明申请
    Methods and Systems for HARQ Protocols 审中-公开

    公开(公告)号：US20180294925A1

    公开(公告)日：2018-10-11

    申请号：US16004740

    申请日：2018-06-11

    Applicant: Apple Inc.

    Inventor： Mo-han Fong ,  Sophie Vrzic ,  Robert Novak ,  Jun Yuan ,  Dong-Sheng Yu

    IPC: H04L1/18 ,  H04L1/00 ,  H04W72/04 ,  H04W72/00 ,  H04W72/12 ,  H04L27/26 ,  H04L5/14 ,  H04L5/00 ,  H04W28/04 ,  H04W88/06 ,  H04W88/04

    Abstract: Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. In some embodiments of the invention, specific control information is signalled from a base station to a mobile station to enable RAS-HARQ operation. In some embodiments of the invention, retransmission signaling in included as part of regular unicast signaling used for both first transmission and retransmissions. In some embodiments of the invention, a 3-state acknowledgement channel and associated error recovery operation enables the base station and mobile station to recover from control signaling error and reduce packet loss.

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