公开(公告)号：US10110294B2

公开(公告)日：2018-10-23

申请号：US14952319

申请日：2015-11-25

Applicant: Apple Inc.

Inventor： Srinivasan Nimmala ,  Navid Damji ,  Tarik Tabet ,  Li Su ,  Longda Xing ,  Zhu Ji

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

Abstract: 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.

公开(公告)号：US09967112B2

公开(公告)日：2018-05-08

申请号：US13887207

申请日：2013-05-03

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Navid Damji ,  Kee-Bong Song ,  Syed Aon Mujtaba ,  Johnson Sebeni ,  Zhu Ji

IPC: H04L25/00 ,  H04L25/02

CPC classification number: H04L25/0206 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0256

Abstract: Methods and apparatus for resuming radio channel measurements and estimations after an interruption in reception. In one exemplary embodiment of the present disclosure, an adaptive solution is provided for channel estimation based at least in part on the reception interruption duration. In one variant, an LTE UE determines a windowing length and/or “shape” for a time domain channel estimation algorithm based on at least the interruption duration. In an alternate variant, an LTE UE determines the interpolation coefficients for a filter based on the interruption duration.

公开(公告)号：US20170347313A1

公开(公告)日：2017-11-30

申请号：US15169280

申请日：2016-05-31

Applicant: Apple Inc.

Inventor： Sunny Arora ,  Rati Agrawal ,  Sami M. Almalfouh ,  Xiantao Sun ,  Johnson O. Sebeni ,  Wael S. Barakat ,  Navid Damji ,  Srinivas Pasupuleti ,  Raghuveer Mallikarjunan

IPC: H04W52/02 ,  H04W72/04 ,  H04W88/02

CPC classification number: H04W52/028 ,  H04W52/0251 ,  H04W72/042 ,  H04W88/02 ,  Y02D70/20

Abstract: This disclosure relates to techniques for estimating baseband power consumption and using the baseband power consumption estimation to select baseband operation features. According to some embodiments, one or more baseband power consumption modifiers occurring during an estimation window may be identified. Baseband power consumption of the wireless device during the estimation window may be estimated based on the identified baseband power consumption modifiers occurring during the estimation window. Baseband data throughput of the wireless device during the estimation window may also be estimated. One or more baseband operation characteristics may be selected based at least in part on the estimated baseband power consumption during the estimation window, possibly in conjunction with the estimated baseband data throughput during the estimation window, current wireless medium conditions, and/or other considerations.

公开(公告)号：US09826454B2

公开(公告)日：2017-11-21

申请号：US14585079

申请日：2014-12-29

Applicant: Apple Inc.

Inventor： Gencer Cili ,  Navid Damji

IPC: H04W36/00 ,  H04W74/00 ,  H04W4/02 ,  H04W36/30 ,  H04W24/08 ,  H04W36/24

CPC classification number: H04W36/30 ,  H04W24/08 ,  H04W36/0022 ,  H04W36/0083 ,  H04W36/24

Abstract: A method for facilitating reselection by a wireless communication device to a first network from a second network after termination of a voice call for which a CSFB procedure was performed is provided. The method can include performing measurement of the first network while connected to the first network and performing measurement of the second network during the voice call. The method can further include determining based at least in part on one or more of the measurements that the wireless communication device is in a mobility state. The method can additionally include deriving a predicted signal quality of the first network after termination of the voice call based at least in part on the measurement of the first network and using the predicted signal quality to determine whether to release a connection to the second network and attempt reselection to the first network.

公开(公告)号：US09816969B2

公开(公告)日：2017-11-14

申请号：US14950608

申请日：2015-11-24

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Navid Damji ,  Johnson O. Sebeni

IPC: H04W52/02 ,  H04B7/06 ,  H04W72/12 ,  H04W76/04 ,  G01N29/36 ,  H04W88/02 ,  G01N29/04 ,  G01N29/34 ,  H04W4/02 ,  H04W72/08

CPC classification number: G01N29/36 ,  G01N29/04 ,  G01N29/34 ,  H04B7/0632 ,  H04B7/0639 ,  H04W4/027 ,  H04W52/0216 ,  H04W52/0251 ,  H04W72/082 ,  H04W72/12 ,  H04W76/28 ,  H04W88/02 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/168 ,  Y02D70/24

Abstract: Providing adaptive channel state feedback (CSF) reports in discontinuous reception (DRX) scenarios in a power-efficient manner. The described algorithm may be able to make adaptive decisions to carry over the CSF from previous DRX cycles based on a comparison between an offset at which CSF values are stable and an offset at which a CSF report is to be sent to a base station. If the CSF values are not stable by the time the CSF report is to be sent, a CSF report from a prior DRX cycle may be used. Alternatively, if the CSF value are stable by the time the CSF report is to be sent, a determination may be made to either generate a new CSF report or use a prior CSF report. The latter determination may be made based on various criteria, including channel conditions and DRX cycle length.

公开(公告)号：US09686750B2

公开(公告)日：2017-06-20

申请号：US13623807

申请日：2012-09-20

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Jason Shi ,  Johnson Sebini ,  Navid Damji ,  Li Su

IPC: H04L12/26 ,  H04W52/02 ,  H04W76/04

CPC classification number: H04W52/0283 ,  H04W76/28 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146 ,  Y02D70/24 ,  Y02D70/25

Abstract: Methods and apparatus for adaptively adjusting temporal parameters such as e.g., wake-up times of digital tracking algorithms (such as timing, frequency and power control). In one exemplary embodiment, wake-up times for tracking loops are based on success/error metrics (e.g., Block Error Rate (BLER), Bit Error Rate (BER), Packet Error Rate (PER), Cyclic Redundancy Checks (CRC), etc.) of one or more previous discontinuous reception (DRX) cycles. In a second embodiment, wake-up times for tracking loops are based on residual frequency and timing errors, etc.

公开(公告)号：US09564997B2

公开(公告)日：2017-02-07

申请号：US14453408

申请日：2014-08-06

Applicant: APPLE INC.

Inventor： Christian W. Mucke ,  Johnson O. Sebeni ,  Navid Damji ,  Samy Khay-Ibbat ,  Syed A. Mujtaba ,  Tarik Tabet ,  Vinay R. Majjigi

IPC: H04W4/00 ,  H04L1/18 ,  H04W52/02

CPC classification number: H04L1/1874 ,  H04L1/1854 ,  H04W52/0209 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/23 ,  Y02D70/24

Abstract: A method for determining whether an acknowledgement received by a user equipment from an external device is a forced acknowledgement. The method including transmitting a set of data stored in an uplink buffer to an external device, receiving an acknowledgement from the external device, determining if the acknowledgement received from the external device was a forced acknowledgement and flushing out an uplink buffer if determined that the acknowledgement was not a forced acknowledgement. The determining the acknowledgement is a forced acknowledgment being based on whether an uplink retransmission collides with one or more scheduled transmission times, a Physical Hybrid-ARQ Indicator Channel (PHICH) falls between gap measurements and an uplink retransmission collides with one of the gap measurements or a TTI bundling retransmission collides with a gap measurement. If the acknowledgement is not a forced acknowledgment, a set of data stored in the uplink buffer is retransmitted to the external device.

Abstract translation: 一种用于确定用户设备从外部设备接收到的确认是否是强制确认的方法。 该方法包括将存储在上行链路缓冲器中的一组数据发送到外部设备，从外部设备接收确认，确定从外部设备接收到的确认是否是强制确认，并且如果确定确认 不是强制确认。 确定确认是基于上行链路重传是否与一个或多个调度的传输时间相冲突的强制确认，物理混合ARQ指示符信道（PHICH）落在间隙测量之间，并且上行链路重传与间隙测量之一相冲突， TTI捆绑重传与间隙测量相冲突。 如果确认不是强制确认，则将存储在上行链路缓冲器中的一组数据重新发送到外部设备。

公开(公告)号：US09332584B2

公开(公告)日：2016-05-03

申请号：US13654522

申请日：2012-10-18

Applicant: Apple Inc.

Inventor： Luciano M Verger ,  Navid Damji ,  Zhu Ji

IPC: H04W76/04 ,  H04W52/02

CPC classification number: H04W76/28 ,  H04W52/0216 ,  H04W52/0232 ,  H04W52/0251 ,  H04W52/0277 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/24

Abstract: Connected-mode discontinuous reception (C-DRX) cycle scaling by a wireless user equipment (UE) device. The UE may establish a connection with a network via a wireless link, which may operate according to LTE. The UE may communicate with the network via the wireless link using C-DRX over a plurality of C-DRX cycles. Each C-DRX cycle may include a period of time during which the UE operates in a reduced-power state and a scheduled on-duration period of time. An indication may be received to remain in the reduced-power state during the scheduled on-duration period of time of at least one C-DRX cycle. The UE may remain in the reduced-power state during the scheduled on-duration period of time of at least one C-DRX cycle in response to the indication.

Abstract translation: 由无线用户设备（UE）设备连接模式不连续接收（C-DRX）周期缩放。 UE可以经由可以根据LTE操作的无线链路与网络建立连接。 UE可以经由多个C-DRX周期中的C-DRX经由无线链路与网络进行通信。 每个C-DRX周期可以包括UE在降低功率状态和调度的持续时间段期间操作的时间段。 可以在至少一个C-DRX周期的调度的持续时间段期间接收指示以保持在降低功率状态。 响应于该指示，UE可以在至少一个C-DRX周期的调度的持续时间段期间保持在降低功率状态。

公开(公告)号：US20150349979A1

公开(公告)日：2015-12-03

申请号：US14290433

申请日：2014-05-29

Applicant: APPLE INC.

Inventor： Zhu JI ,  Johnson O. Sebeni ,  Navid Damji

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

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US09173126B2

公开(公告)日：2015-10-27

申请号：US14568631

申请日：2014-12-12

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Navid Damji ,  Kee-bong Song ,  Syed Aon Mujtaba ,  Youngjae Kim ,  Johnson O. Sebeni ,  Yuchul Kim

IPC: H04W24/10 ,  H04W76/02 ,  H04W72/12 ,  H04L12/801 ,  H04L12/26 ,  H04W72/08

CPC classification number: H04W24/10 ,  H04L1/0003 ,  H04L1/0026 ,  H04L43/0823 ,  H04L47/10 ,  H04W72/085 ,  H04W72/1231 ,  H04W72/1284

Abstract: Manipulating modulation and coding scheme (MCS) allocation after a communication interruption. A UE device may resume communications with a BS after a communication interruption. Channel quality information may be generated and transmitted to the BS. The channel quality information may be based on channel quality measurements, and may also be based on an offset configured manipulate an MCS allocation by the BS based on determining that the interruption to communication between the UE and the BS has occurred.

Abstract translation: 在通信中断后操纵调制和编码方案（MCS）分配。 在通信中断之后，UE设备可以恢复与BS的通信。 可以生成信道质量信息并将其发送到BS。 信道质量信息可以基于信道质量测量，并且还可以基于配置来基于BS来基于确定UE和BS之间的通信的中断已经发生而由BS操纵MCS分配的偏移。