公开(公告)号：US20190373555A1

公开(公告)日：2019-12-05

申请号：US15992826

申请日：2018-05-30

Applicant: APPLE INC.

Inventor： Jia TANG ,  Zhu JI ,  Yu-Lin WANG ,  Wei ZHANG

IPC: H04W52/02 ,  H04W72/12

Abstract: A method and user equipment for transmission slot blank. The method includes, at the user equipment (“UE”), establishing a voice call, determining whether the voice call currently comprises a silence period, blanking at least two slots of a control frame according to a predetermined pattern, wherein the predetermined pattern includes at least one slot that is not blanked between the at least two slots that are blanked, and transmitting the control frame.

公开(公告)号：US20160134457A1

公开(公告)日：2016-05-12

申请号：US14996007

申请日：2016-01-14

Applicant: Apple Inc.

Inventor： Zhu JI ,  Johnson O. SEBENI ,  Yu-Lin WANG

IPC: H04L27/26 ,  H04L25/02

CPC classification number: H04L27/2659 ,  H04L25/0212 ,  H04L27/266 ,  H04L27/2682 ,  H04L27/2688 ,  H04L2027/0053

Abstract: Methods and apparatuses to determine a frequency adjustment in a mobile wireless device are disclosed. A method includes determining a coarse frequency error estimate and multiple fine frequency error estimates; selecting at least one candidate fine frequency error estimate having a frequency value closest to a corresponding frequency value for the coarse frequency error estimate; and determining a frequency adjustment based on a combination of the coarse frequency error estimate and the selected at least one candidate fine frequency error estimate. In an embodiment, the method further includes calculating a confidence metric for the coarse frequency error estimate; when the confidence metric exceeds a threshold value, determining the frequency adjustment based on the candidate fine frequency error estimate; otherwise, determining the frequency adjustment based on a fine frequency error estimate in the plurality of fine frequency error estimates closest to a most recent previous fine frequency error estimate.

Abstract translation: 公开了确定移动无线设备中的频率调整的方法和装置。 一种方法包括：确定粗略频率误差估计和多个精细频率误差估计; 选择具有最接近所述粗略频率误差估计的对应频率值的频率值的至少一个候选精细频率误差估计; 以及基于粗略频率误差估计和所选择的至少一个候选精细频率误差估计的组合来确定频率调整。 在一个实施例中，该方法还包括计算粗略频率误差估计的置信度量; 当所述置信量度超过阈值时，基于所述候选精细频率误差估计来确定频率调整; 否则，基于与最近的先前精细频率误差估计最接近的多个精细频率误差估计中的精细频率误差估计来确定频率调整。

公开(公告)号：US20160286535A1

公开(公告)日：2016-09-29

申请号：US14846002

申请日：2015-09-04

Applicant: APPLE INC.

Inventor： Zhu JI ,  Johnson O. SEBENI ,  Yu-Lin WANG

IPC: H04W72/04 ,  H04L5/00 ,  H04L12/26

CPC classification number: H04L5/0007 ,  H04B17/309 ,  H04L5/0048 ,  H04L5/0053

Abstract: A user equipment and method performs an adaptive channel estimation. The method performed at a user equipment includes receiving physical downlink control channel (PDCCH) information for a subframe from a network, the subframe including reference symbols at predetermined times therein. If the PDCCH information does not include a downlink grant for the user equipment, a measured value of a network metric experienced by the user equipment is determined and compared to a threshold criteria. A first set of the reference symbols is used for channel estimation when the threshold value is satisfied and a second set of the reference symbols is used for channel estimation when the threshold is not satisfied, the first set of references symbols is a subset of the second set of the reference symbols. In another embodiment, a previously determined channel estimation at a previous subframe is used for the subframe when the threshold is satisfied.

Abstract translation: 用户设备和方法执行自适应信道估计。 在用户设备中执行的方法包括从网络接收子帧的物理下行链路控制信道（PDCCH）信息，该子帧包括在其中的预定时间的参考符号。 如果PDCCH信息不包括用户设备的下行链路许可，则确定用户设备经历的网络度量的测量值并将其与阈值标准进行比较。 当阈值满足时，将第一组参考符号用于信道估计，并且当阈值不满足时将第二组参考符号用于信道估计时，第一组参考符号是第二组参考符号的子集 一组参考符号。 在另一个实施例中，当满足阈值时，对于子帧使用先前子帧的先前确定的信道估计。

公开(公告)号：US20140029464A1

公开(公告)日：2014-01-30

申请号：US14039526

申请日：2013-09-27

Applicant: APPLE INC.

Inventor： Johnson SEBENI ,  Yu-Lin WANG ,  Jianxiong SHI

IPC: H04W24/02

CPC classification number: H04W52/343 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0015 ,  H04W24/02 ,  H04W24/08 ,  H04W52/241 ,  H04W52/245 ,  H04W52/325

Abstract: Methods and apparatus for correcting quantization errors in signal reception based on estimated network loading including solutions for preserving cellular network performance in low noise, high interference environments. In one embodiment, a data channel is amplified with respect to other signals based on network load during periods of relatively low network utilization. Dynamic modification of the data channel's power level is configured to overcome quantization errors, rather than the true noise floor (which is insignificant in low noise environments). Such solutions provide both the fidelity necessary to enable high degrees of unwanted signaling rejection, while still preserving data channel quality.

Abstract translation: 基于估计的网络负载来校正信号接收中的量化误差的方法和装置，包括用于在低噪声，高干扰环境中保持蜂窝网络性能的解决方案。 在一个实施例中，在相对低的网络利用期间，基于网络负载，数据信道相对于其他信号被放大。 配置数据通道功率电平的动态修改，以克服量化误差，而不是真实的噪声基底（这在低噪声环境中是无关紧要的）。 这样的解决方案提供了在保持数据信道质量的同时能够实现高度不需要的信令拒绝所必需的保真度。