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    Device and Method for Adaptive Link Adaptation
    2.
    发明申请
    Device and Method for Adaptive Link Adaptation 审中-公开

    公开(公告)号：US20190036829A1

    公开(公告)日：2019-01-31

    申请号：US15757812

    申请日：2015-09-07

    申请人： APPLE INC.

    发明人： Zhu JI ,  Johnson O. SEBENI ,  Xugang SONG ,  Yanxia WANG

    IPC分类号： H04L12/851 ,  H04W24/08 ,  H04L1/00 ,  H04B17/336 ,  H04B7/01 ,  H04W76/28

    摘要： A device, system, and method perform an adaptive link adaptation. The method, at a user equipment (UE) connected to a Long Term Evolution (LTE) network via an evolved Node B (eNB), includes determining a type of wireless traffic being utilized by the UE based upon at least one application executed on the UE, the wireless traffic being one of a data only, a voice only, or a combination thereof. The method includes determining a block error rate (BLER) target value to be used in a channel state feedback operation associated with a link adaptation operation for a connection between the UE and the eNB.

    Device and Method for Adaptive Channel Estimation
    3.
    发明申请
    Device and Method for Adaptive Channel Estimation 审中-公开

    公开(公告)号：US20170324588A1

    公开(公告)日：2017-11-09

    申请号：US15601265

    申请日：2017-05-22

    申请人： APPLE INC.

    发明人： Zhu JI ,  Johnson O. SEBENI ,  Navid DAMJI

    IPC分类号： H04L25/02 ,  H04W4/06 ,  H04L27/26 ,  H04L5/00 ,  H04L12/18

    CPC分类号： H04L25/0224 ,  H04L5/0048 ,  H04L12/189 ,  H04L25/0212 ,  H04L25/0222 ,  H04L25/0232 ,  H04L27/2601 ,  H04W4/06

    摘要： A method to be performed at a station configured to connect to a Long Term Evolution radio access network (LTE-RAN) to utilize enhanced Multimedia Broadcast Multicast Services using a Multicast-Broadcast Single-Frequency Network (MBSFN). The method including receiving a MBSFN subframe having a MBSFN subframe structure including a plurality of Orthogonal Frequency-Division Multiplexing (OFDM) symbols, a first one of the OFDM symbols having a first reference symbol inserted therein, a second one of the OFDM symbols having a second reference symbol inserted therein, determining a rate of change of channel conditions being experienced by the station and performing a non-destaggered channel estimation when the rate of change of channel conditions is greater than a predetermined threshold, the non-destaggered channel estimation using a first Channel Impulse Response (CIR) at the first OFDM symbol and a second CIR at the second OFDM symbol.

    DEVICE OBFUSCATION OF POSITION TRACKING
    4.
    发明申请
    DEVICE OBFUSCATION OF POSITION TRACKING 审中-公开

    公开(公告)号：US20180351661A1

    公开(公告)日：2018-12-06

    申请号：US15715058

    申请日：2017-09-25

    申请人： Apple Inc.

    发明人： Elliot S. BRIGGS ,  Zhu JI ,  Johnson O. SEBENI

    IPC分类号： H04B17/10 ,  H04W4/02 ,  G01S5/02

    CPC分类号： H04B17/104 ,  G01S5/0284 ,  H04B17/18 ,  H04W4/02 ,  H04W4/90

    摘要： A user of a device desires that geographic position information of the device be kept private. A network may track a geographic position of a device using timing advance (TA) data and also a passive attacker may attempt to track the geographic position of the device by observing base station TA commands. In embodiments provided herein, a device diminishes or obfuscates geographic position information by using a timing change value while not disturbing synchronization of uplink signals from multiple devices arriving at a base station. To resist an averaging solution by an observer, the device in some embodiments adjusts the timing change value based on an internal timer. In an emergency call situation, the method permits the base station to obtain geographic position information based on TA procedures.

    Apparatus, Systems and Methods for Adaptive Downlink Scheduling and Link Adaptation
    8.
    发明申请
    Apparatus, Systems and Methods for Adaptive Downlink Scheduling and Link Adaptation 审中-公开

    公开(公告)号：US20170295580A1

    公开(公告)日：2017-10-12

    申请号：US15128264

    申请日：2016-01-08

    申请人： APPLE INC.

    发明人： Zhu JI ,  Yanxia WANG ,  Bing ZHAO ,  Johnson O. SEBENI

    IPC分类号： H04W72/08 ,  H04W72/04 ,  H04L1/00

    摘要： Described herein are apparatuses, systems and methods for adaptive downlink scheduling and link adaptation. The methods including, at a base station connected to a user equipment (“UE”), determining an initial modulation and coding scheme (“MCS”) for a plurality of subframes to be transmitted to the UE, wherein each MCS relates to a coding rate value for the subframes, determining an MCS pattern for the plurality of subframes based on the initial MCS, wherein an MCS for one of the subframes has a higher coding rate value than the initial MCS, and transmitting the plurality of subframes to the UE according to the MCS pattern.

    ADAPTIVE USE OF RECEIVER DIVERSITY
    9.
    发明申请
    ADAPTIVE USE OF RECEIVER DIVERSITY 审中-公开
    自适应使用接收者多样性

    公开(公告)号：US20160080067A1

    公开(公告)日：2016-03-17

    申请号：US14952319

    申请日：2015-11-25

    申请人： Apple Inc.

    发明人： Srinivasan NIMMALA ,  Navid DAMJI ,  Tarik TABET ,  Li SU ,  Longda XING ,  Zhu JI

    IPC分类号： H04B7/08 ,  H04W24/02 ,  H04W52/02

    CPC分类号： H04B7/0877 ,  H04B7/0814 ,  H04B7/0822 ,  H04B7/0871 ,  H04W24/02 ,  H04W52/0225 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/23 ,  Y02D70/444

    摘要： A method for adaptively disabling receiver diversity is provided. The method can include a wireless communication device determining an active data traffic pattern; defining a threshold channel quality metric based at least in part on a threshold channel quality needed to support a threshold quality of service for the active data traffic pattern; comparing a measured channel quality to the threshold channel quality metric; and disabling receiver diversity in an instance in which the measured channel quality metric satisfies the threshold channel quality metric.

    摘要翻译： 提供了一种用于自适应地禁用接收机分集的方法。 该方法可以包括确定活动数据业务模式的无线通信设备; 至少部分地基于为活动数据业务模式支持阈值服务质量所需的阈值信道质量来定义阈值信道质量度量; 将测量的信道质量与阈值信道质量度量进行比较; 并且在测量的信道质量度量满足阈值信道质量度量的情况下禁用接收机分集。

    Device and Method for Adaptive Channel Estimation
    10.
    发明申请
    Device and Method for Adaptive Channel Estimation 有权
    自适应信道估计的装置和方法

    公开(公告)号：US20150349979A1

    公开(公告)日：2015-12-03

    申请号：US14290433

    申请日：2014-05-29

    申请人： APPLE INC.

    发明人： Zhu JI ,  Johnson O. Sebeni ,  Navid Damji

    IPC分类号： H04L25/02 ,  H04L27/26 ,  H04W4/06

    CPC分类号： H04L25/0224 ,  H04L5/0048 ,  H04L12/189 ,  H04L25/0212 ,  H04L25/0222 ,  H04L25/0232 ,  H04L27/2601 ,  H04W4/06

    摘要： A method to be performed at a station configured to connect to a Long Term Evolution radio access network (LTE-RAN) to utilize enhanced Multimedia Broadcast Multicast Services using a Multicast-Broadcast Single-Frequency Network (MBSFN). The method including receiving a MBSFN subframe having a MBSFN subframe structure including a plurality of Orthogonal Frequency-Division Multiplexing (OFDM) symbols, a first one of the OFDM symbols having a first reference symbol inserted therein, a second one of the OFDM symbols having a second reference symbol inserted therein, determining a rate of change of channel conditions being experienced by the station and performing a non-destaggered channel estimation when the rate of change of channel conditions is greater than a predetermined threshold, the non-destaggered channel estimation using a first Channel Impulse Response (CIR) at the first OFDM symbol and a second CIR at the second OFDM symbol.

    摘要翻译： 一种在被配置为连接到长期演进无线电接入网络（LTE-RAN）的站处执行以利用使用多播广播单频网络（MBSFN）的增强型多媒体广播多播服务的站的方法。 所述方法包括接收具有包括多个正交频分复用（OFDM）符号的MBSFN子帧结构的MBSFN子帧，具有插入其中的第一参考符号的第一个OFDM符号，具有一个 第二参考符号插入其中，确定由该站经历的信道条件的变化速率，并且当信道条件的变化率大于预定阈值时，执行非去排列的信道估计，使用 第一OFDM符号处的第一信道脉冲响应（CIR）和第二OFDM符号处的第二CIR。