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    Outage delay indication and exploitation
    22.
    发明授权
    Outage delay indication and exploitation 有权

    公开(公告)号：US10091725B2

    公开(公告)日：2018-10-02

    申请号：US15055801

    申请日：2016-02-29

    Applicant: Apple Inc.

    Inventor： Chiu Ngok E. Wong ,  Christiaan A. Hartman ,  Guoqing Li ,  Jarkko Lauri Sakari Kneckt ,  Joonsuk Kim

    IPC: H04W52/02 ,  H04W8/18 ,  H04L29/06 ,  H04W84/12 ,  H04W4/50

    Abstract: Embodiments described herein relate to a system and method for providing flexible receiver configuration in wireless communication systems, such as 802.11 WLAN systems. In one embodiment, a wireless device may transmit a first data frame including first configuration information specifying a first configuration of the receiver to notify a remote device that the wireless device intends to configure its receiver according to the first configuration. After receiving an acknowledgement frame confirming the first configuration information, the wireless device may configure the receiver according to the first configuration. In another embodiment, a wireless device may receive a first data frame including first configuration information and further including a request that the wireless device configure its receiver according to the first configuration. In response, the wireless device may configure the receiver according to the first configuration. In either case, the wireless device may receive subsequent communications according to the first configuration.

    Wi-Fi adaptive transmit antenna selection
    23.
    发明授权
    Wi-Fi adaptive transmit antenna selection 有权

    公开(公告)号：US10014900B2

    公开(公告)日：2018-07-03

    申请号：US15707246

    申请日：2017-09-18

    Applicant: Apple Inc.

    Inventor： Xiaowen Wang ,  Syed Aon Mujtaba ,  Vinay R. Majjigi ,  Joonsuk Kim

    IPC: H04B7/00 ,  H04B1/40 ,  H04B7/08 ,  H04B7/06 ,  H04W88/08 ,  H04W84/12

    CPC classification number: H04B1/40 ,  H04B7/061 ,  H04B7/0817 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/10

    Abstract: Wireless communication devices (UEs) may include multiple receive (RX) chains and associated antennas, and at least one transmit (TX) chain co-located with one of the RX chains. The UE may track instant fading of the antenna gain(s) during reception of packets from an associated access point (AP) device to which the UE intends to transmit packets. The UE may also track long term antenna gain(s), using any packets received at the multiple RX chains within the UE. At a switching occasion, a decision is made by the UE whether to switch antennas. If the instant fading detection is based on packets received no later than a specified time period prior to the switching occasion, then the UE may make the switching decision based on the results of the instant fading tracking. Otherwise, the UE may make the switching decision based on the results of the long term antenna gain tracking.

    Wireless Preamble Structure for OFDMA Signaling under OBSS Interference
    27.
    发明申请
    Wireless Preamble Structure for OFDMA Signaling under OBSS Interference 审中-公开
    OBSS干扰下OFDMA信令的无线前导码结构

    公开(公告)号：US20160380731A1

    公开(公告)日：2016-12-29

    申请号：US15192065

    申请日：2016-06-24

    Applicant: Apple Inc.

    Inventor： Joonsuk Kim ,  Guoqing Li

    IPC: H04L5/00 ,  H04W4/08 ,  H04W28/20 ,  H04L1/00

    CPC classification number: H04L5/0007 ,  H04L1/0003 ,  H04L1/0031 ,  H04L1/0061 ,  H04L1/0083 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/0094 ,  H04W4/08 ,  H04W28/20 ,  H04W72/042 ,  H04W80/00 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08

    Abstract: A wireless access point transmits a protocol data unit (PDU) that includes data and signaling for a plurality of user devices. The PDU spans a channel in frequency and an interval in time, and includes a first signaling section, a second signaling section and a traffic action. For each of a plurality of subchannels of the channel: the first signaling section includes (within the subchannel) a corresponding redundant copy of common signaling information for the user devices associated with the access point; the second signaling section includes (within the subchannel) a corresponding set of user-specific signaling information for a corresponding group of one or more of the user devices; and the traffic section includes (within the subchannel) a corresponding set of traffic data for the corresponding group of one or more user devices. Subchannels sizes may be configurable. A signaling set CRC may be included per subchannel.

    Abstract translation: 无线接入点发送包括用于多个用户设备的数据和信令的协议数据单元（PDU）。 PDU以频率和时间间隔跨越信道，并且包括第一信令部分，第二信令部分和业务动作。 对于信道的多个子信道中的每一个：第一信令部分包括（在子信道内）与用于与接入点相关联的用户设备的公共信令信息的对应冗余副本; 第二信令部分包括（在子信道内）用于一个或多个用户设备的对应组的相应的一组用户特定信令信息; 并且业务部分包括（在子信道内）用于一个或多个用户设备的相应组的对应的一组业务数据。 子通道尺寸可以是可配置的。 每个子信道可以包括信令集CRC。

    CONTROLLED OFDMA RANDOM ACCESS
    28.
    发明申请
    CONTROLLED OFDMA RANDOM ACCESS 审中-公开
    控制OFDMA随机访问

    公开(公告)号：US20160309508A1

    公开(公告)日：2016-10-20

    申请号：US15099055

    申请日：2016-04-14

    Applicant: Apple Inc.

    Inventor： Guoqing LI ,  Joonsuk Kim ,  Christiaan A. Hartman ,  Syed Aon Mujtaba ,  Chiu Ngok E. Wong ,  Yong Liu ,  Su Khiong Yong

    IPC: H04W74/00 ,  H04W74/08 ,  H04L5/00

    CPC classification number: H04W74/006 ,  H04L5/0007 ,  H04W74/0833 ,  H04W74/085 ,  Y02D70/00 ,  Y02D70/142

    Abstract: Embodiments include a method, computer program product, and system for grouping electronic devices into contention groups to reduce uplink Orthogonal Frequency-Division Multiple Access (OFDMA) random access (OFDMA-RA) collisions. An access point may explicitly assign an electronic device to a contention group, or the electronic device may implicitly determine an assignment to the contention group. To explicitly assign a device to a contention group, the access point may randomly assign or assign based on a criteria of the electronic device. Examples of criteria include an association identifier (AID), a traffic type/quality of service (QoS) category, a power saving preference, and an association status. The electronic device may implicitly determine a contention group assignment based on the total number of contention groups. The electronic device may use the explicitly or implicitly assigned contention group number to determine whether the electronic device may contend for a given trigger frame random access (TF-R) frame.

    Abstract translation: 实施例包括一种方法，计算机程序产品和用于将电子设备分组成竞争组以减少上行链路正交频分多址（OFDMA）随机接入（OFDMA-RA）冲突的系统。 接入点可以明确地将电子设备分配给争用组，或者电子设备可以隐含地确定对竞争组的分配。 为了将设备明确地分配给争用组，接入点可以基于电子设备的标准来随机分配或分配。 标准的示例包括关联标识符（AID），业务类型/服务质量（QoS）类别，省电优选和关联状态。 电子设备可以基于竞争组的总数隐含地确定争用组分配。 电子设备可以使用明确或隐含地分配的争用组号来确定电子设备是否可以竞争给定的触发帧随机接入（TF-R）帧。

    Uplink OFDMA Processing in WLANs
    29.
    发明申请
    Uplink OFDMA Processing in WLANs 有权
    WLAN中的上行OFDMA处理

    公开(公告)号：US20160205672A1

    公开(公告)日：2016-07-14

    申请号：US14989945

    申请日：2016-01-07

    Applicant: Apple Inc.

    Inventor： Joonsuk Kim ,  Yuchul Kim

    IPC: H04W72/04 ,  H04L25/02 ,  H04W56/00 ,  H04L5/00 ,  H04W74/08

    CPC classification number: H04L5/0048 ,  H04L1/12 ,  H04L1/1854 ,  H04L5/0023 ,  H04L25/0202 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675 ,  H04W56/002 ,  H04W84/12

    Abstract: This disclosure relates to orthogonal frequency division multiple access (OFDMA) communication in wireless local area networks (WLANs). According to some embodiments, a downlink OFDMA frame may be transmitted. An uplink OFDMA frame including acknowledgements associated with the downlink OFDMA frame may be received. The uplink OFDMA frame may be processed, in some instances including determining which devices receiving the downlink OFDMA frame transmitted an acknowledgement associated with the downlink OFDMA frame in the uplink OFDMA frame.

    Abstract translation: 本公开涉及无线局域网（WLAN）中的正交频分多址（OFDMA）通信。 根据一些实施例，可以发送下行链路OFDMA帧。 可以接收包括与下行链路OFDMA帧相关联的确认的上行链路OFDMA帧。 可以处理上行链路OFDMA帧，在某些情况下，包括确定在上行链路OFDMA帧中接收下行链路OFDMA帧发送的与下行链路OFDMA帧相关联的确认的设备。

    Wi-Fi Adaptive Receiver Diversity
    30.
    发明申请
    Wi-Fi Adaptive Receiver Diversity 有权
    Wi-Fi自适应接收机多样性

    公开(公告)号：US20160127028A1

    公开(公告)日：2016-05-05

    申请号：US14871794

    申请日：2015-09-30

    Applicant: APPLE INC.

    Inventor： Xiaowen Wang ,  Vinay R. Majjigi ,  Joonsuk Kim ,  Syed Aon Mujtaba

    IPC: H04B7/08 ,  H04B7/04 ,  H04B17/318

    CPC classification number: H04B7/0817 ,  H04B7/0413 ,  H04B7/0877 ,  H04B17/12 ,  H04B17/318 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/168 ,  Y02D70/26 ,  Y02D70/444

    Abstract: Wireless communication devices with multiple receive (RX) chains may be operated to maintain high performance while saving power. This may be accomplished by evaluating signal strength during transmission of the RX packets, and/or evaluating a possible imbalance (gain difference) between the multiple RX chains within the wireless communication device. Signal strength (or good signal) detection may be enabled when non-MIMO (non-multiple-in-multiple-out) transmissions are taking place, while imbalance detection (antenna gain comparison) may be enabled when a specified number of single-stream packets have been received. Once the decision has been made to operate in a reduced number RX path mode, decision to reactivate one or more additional RX paths may be made based on MIMO detection, a detection of a drop in signal quality, and/or upon expiration of a power save timer.

    Abstract translation: 具有多个接收（RX）链的无线通信设备可以被操作以在节省电力的同时保持高性能。 这可以通过在RX分组的传输期间评估信号强度和/或评估无线通信设备内的多个RX链之间的可能的不平衡（增益差）来实现。 当发生非MIMO（非多重多输出）传输时，可以启用信号强度（或良好信号）检测，而当指定数量的单流时，可以启用不平衡检测（天线增益比较） 已收到数据包。 一旦做出了以减少数量的RX路径模式操作的决定，可以基于MIMO检测，信号质量下降检测和/或功率失效来重新激活一个或多个附加RX路径的决定 保存定时器。

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