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    Adaptive Time Diversity And Spatial Diversity For OFDM
    4.
    发明申请
    Adaptive Time Diversity And Spatial Diversity For OFDM 审中-公开
    OFDM的自适应时间分集和空间分集

    公开(公告)号：US20140376601A1

    公开(公告)日：2014-12-25

    申请号：US14482481

    申请日：2014-09-10

    Applicant: APPLE INC.

    Inventor： Shiquan WU ,  Wen TONG ,  Leo STRAWCZYNSKI

    IPC: H04L27/26 ,  H04B7/06

    CPC classification number: H04L27/2646 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L27/2626 ,  H04L27/2628

    Abstract: An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix.

    Abstract translation: 一种适应性正交频分复用系统（OFDM），其使用多输入多输出（MIMO）来具有根据时间分集发送的OFDM信号以减少信号衰落或者根据空间分集来增加数据速率。 基于阈值与三个标准中的至少一个的比较的结果，将子载波分类为空间分集发送或时间分集发送。 标准包括计算频道响应矩阵的最小本征值和矩阵的对角线的最小元素以及矩阵的最大和最小本征值的比率。

    Systems and Methods for Use with Orthogonal Frequency Division Multiplexing
    5.
    发明申请
    Systems and Methods for Use with Orthogonal Frequency Division Multiplexing 有权
    用于正交频分复用的系统和方法

    公开(公告)号：US20140348117A1

    公开(公告)日：2014-11-27

    申请号：US14456993

    申请日：2014-08-11

    Applicant: APPLE INC.

    Inventor： Hang ZHANG ,  Mo-Han FONG ,  Peiying ZHU ,  Wen TONG

    IPC: H04L5/00 ,  H04L1/18

    CPC classification number: H04L5/0055 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0067 ,  H04L1/0071 ,  H04L1/0643 ,  H04L1/1671 ,  H04L1/1812 ,  H04L1/1819 ,  H04L1/1822 ,  H04L1/1861 ,  H04L1/1887 ,  H04L1/189 ,  H04L1/1896 ,  H04L9/0891 ,  H04L9/30 ,  H04L27/2601 ,  H04L27/2602 ,  H04L2209/80 ,  H04W12/02 ,  H04W12/04

    Abstract: Systems and methods are provided for enabling H-ARQ communication between a base station and one or more wireless terminals. Methods for enabling incremental redundancy (IR) based H-ARQ, Chase based H-ARQ and Space-Time Code combining (STC) based H-ARQ between devices for down-link and up-link direction transmissions are provided in the form of an information element (IE) for use with a Normal MAP convention as currently accepted in the draft version standard of IEEE 802.16. In addition, embodiments of the invention provide a resource management scheme to protect a network from abuse of resources from a wireless terminal not registered with the network. Components of the down-link and up-link mapping components of a data frame transmitted from the base station to one or more wireless terminals included messages that are readable by all wireless terminals as well as some messages that are encrypted and only readable by wireless terminals that are authenticated as being registered with the network.

    Abstract translation: 提供了系统和方法，用于使基站与一个或多个无线终端之间进行H-ARQ通信。 在下行链路和上行链路方向传输的设备之间使用基于H-ARQ，基于Chase的H-ARQ和基于空时码合并（STC）的H-ARQ的方法可以以 信息元素（IE），用于IEEE 802.16草案版本标准中当前接受的普通MAP约定。 此外，本发明的实施例提供了一种资源管理方案，用于保护网络免受来自未向网络注册的无线终端的资源的滥用。 从基站发送到一个或多个无线终端的数据帧的下行链路和上行链路映射组件的组件包括可由所有无线终端读取的消息以及被加密且仅由无线终端可读的一些消息 被认证为在网络上注册。

    Adaptive Time Diversity And Spatial Diversity For OFDM
    8.
    发明申请
    Adaptive Time Diversity And Spatial Diversity For OFDM 审中-公开
    OFDM的自适应时间分集和空间分集

    公开(公告)号：US20160261450A1

    公开(公告)日：2016-09-08

    申请号：US15155693

    申请日：2016-05-16

    Applicant: APPLE INC.

    Inventor： Shiquan WU ,  Wen TONG ,  Leo STRAWCZYNSKI

    IPC: H04L27/26 ,  H04B7/06 ,  H04L5/00 ,  H04B7/04

    CPC classification number: H04L27/2646 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L27/2626 ,  H04L27/2628

    Abstract: An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix.

    Abstract translation: 一种适应性正交频分复用系统（OFDM），其使用多输入多输出（MIMO）来具有根据时间分集发送的OFDM信号以减少信号衰落或者根据空间分集来增加数据速率。 基于阈值与三个标准中的至少一个的比较的结果，将子载波分类为空间分集发送或时间分集发送。 标准包括计算频道响应矩阵的最小本征值和矩阵的对角线的最小元素以及矩阵的最大和最小本征值的比率。

    Handoffs and Handoff Selection in a Wireless Access Network
    9.
    发明申请
    Handoffs and Handoff Selection in a Wireless Access Network 审中-公开
    无线接入网络中的切换和切换选择

    公开(公告)号：US20150065141A1

    公开(公告)日：2015-03-05

    申请号：US14546732

    申请日：2014-11-18

    Applicant: APPLE INC.

    Inventor： Jianglei MA ,  Peiying ZHU ,  Wen TONG ,  Hang ZHANG ,  Mo-Han FONG

    IPC: H04W36/00

    CPC classification number: H04W36/0033 ,  H04W36/18 ,  H04W36/30

    Abstract: The present invention facilitates handoffs for a mobile terminal in a wireless access network that is capable of supporting different types of handoffs. The different handoff types may include soft handoffs and fast base station switching (FBSS). In operation, context information associated with supporting wireless communications between the wireless access network and the mobile terminal are determined. Based on whether the context information is shared between base stations involved in the handoff or transferred from one base station to another of the base stations involved in the handoff, a particular handoff type is selected from the different handoff types that are available. Selecting the specific type of handoff to use may also be based on the level of context information that is available, the actual content of the context information, application preferences, channel conditions, base station or mobile terminal capabilities, or any combination thereof.

    Abstract translation: 本发明有助于能够支持不同类型的切换的无线接入网络中的移动终端的切换。 不同的切换类型可以包括软切换和快速基站切换（FBSS）。 在操作中，确定与支持无线接入网络和移动终端之间的无线通信相关联的上下文信息。 基于上下文信息是否在切换中涉及的基站或从一个基站传送到切换中涉及的基站的另一个基站之间共享，从可用的不同切换类型中选择特定切换类型。 选择要使用的特定类型的切换还可以基于可用的上下文信息的级别，上下文信息的实际内容，应用偏好，信道条件，基站或移动终端能力，或其任何组合。

    Closed-Loop MIMO Systems and Methods
    10.
    发明申请
    Closed-Loop MIMO Systems and Methods 审中-公开
    闭环MIMO系统和方法

    公开(公告)号：US20150036669A1

    公开(公告)日：2015-02-05

    申请号：US14325114

    申请日：2014-07-07

    Applicant: APPLE INC.

    Inventor： Jia MING ,  Jianglei MA ,  Wen TONG ,  Peiying ZHU

    IPC: H04L5/00 ,  H04L27/26 ,  H04B7/04

    CPC classification number: H04L5/0048 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/14 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0242 ,  H04L25/03343 ,  H04L27/2601 ,  H04L27/2613 ,  H04L2025/03426 ,  H04L2025/03802

    Abstract: Methods, devices and systems are provided for transmitting and receiving MIMO signals. In one embodiment, transmitting of the MIMO signals involves pre-coding each of at least two data symbols using a respective pre-coding codeword to preclude a corresponding plurality of pre-coded data symbols. A respective signal is transmitted from each of a plurality of antennas, the respective signal including one of the pre-coded signals and at least one pilot for use in channel estimation. The signals collectively further include at least one beacon pilot vector consisting of a respective beacon pilot per antenna, the beacon pilot vector containing contents known to a receiver for use by the receiver in determining the codeword used to pre-code the at least one data signal.

    Abstract translation: 提供了发送和接收MIMO信号的方法，设备和系统。 在一个实施例中，MIMO信号的发送涉及使用相应的预编码码字对至少两个数据符号中的每一个进行预编码，以排除相应的多个预编码数据符号。 相应的信号从多个天线中的每一个发送，各个信号包括一个预编码信号和至少一个导频，用于信道估计。 信号集体地进一步包括由每个天线的每个信标导频组成的至少一个信标导频向量，信标导频向量包含接收机已知的内容，以供接收机在确定用于对所述至少一个数据信号进行预编码的码字时使用 。

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