公开(公告)号：US09167519B2

公开(公告)日：2015-10-20

申请号：US13754774

申请日：2013-01-30

Applicant: Apple Inc.

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

IPC: H04W4/00 ,  H04W52/02

CPC classification number: H04W52/0225 ,  H04B17/309 ,  H04W36/0083 ,  H04W36/0088 ,  H04W52/0229 ,  H04W52/0245 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146 ,  Y02D70/24 ,  Y02D70/25

Abstract: Methods and apparatus for adaptively adjusting temporal parameters (e.g., neighbor cell search durations). In one embodiment, neighbor cell search durations during discontinuous reception are based on a physical channel metric indicating signal strength and quality (e.g. Reference Signal Received Power (RSRP), Received Signal Strength Indication (RSSI), Reference Signal Receive Quality (RSRQ), etc.) of a cell. In a second embodiment, neighbor cell search durations are based on a multitude of physical layer metrics from one or more cells. In one variant, the multitude of physical layer metrics may include signal strength and quality metrics from the serving base station as well as signal strength and quality indicators from neighbor cells derived from the cells respective synchronization sequences.

Abstract translation: 用于自适应地调整时间参数（例如，相邻小区搜索持续时间）的方法和装置。 在一个实施例中，不连续接收期间的相邻小区搜索持续时间是基于指示信号强度和质量的物理信道度量（例如参考信号接收功率（RSRP），接收信号强度指示（RSSI），参考信号接收质量（RSRQ）等） 。）细胞。 在第二实施例中，相邻小区搜索持续时间基于来自一个或多个小区的多个物理层度量。 在一个变型中，多个物理层度量可以包括来自服务基站的信号强度和质量度量以及来自从小区相应的同步序列导出的相邻小区的信号强度和质量指示符。

公开(公告)号：US20150271697A1

公开(公告)日：2015-09-24

申请号：US14733351

申请日：2015-06-08

Applicant: Apple Inc.

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

IPC: H04W24/10 ,  H04W24/08 ,  H04W76/04

CPC classification number: H04W24/10 ,  H04B17/309 ,  H04W24/08 ,  H04W52/02 ,  H04W52/0216 ,  H04W76/28 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24 ,  Y02D70/25

Abstract: Methods and apparatus for managing radio measurements during discontinuous reception. In one exemplary embodiment, the distribution of Long Term Evolution (LTE) DRX measurements is staggered or distributed across multiple DRX cycles (which may be contiguous or non-contiguous) so as to reduce the transceiver activity and power consumption. The exemplary UE in one implementation only performs a subset of measurements during each DRX cycle. By staggering or distributing cell measurements over multiple DRX cycles, the UE can improve power consumption, while still conforming to measurement requirements.

Abstract translation: 在不连续接收期间管理无线电测量的方法和装置。 在一个示例性实施例中，长期演进（LTE）DRX测量的分布在多个DRX周期（其可以是连续的或不连续的）上交错或分布，以便减少收发器活动和功率消耗。 在一个实现中的示例性UE仅在每个DRX周期期间执行测量的子集。 通过在多个DRX周期上交错或分配小区测量，UE可以提高功耗，同时仍然符合测量要求。

公开(公告)号：US20150173009A1

公开(公告)日：2015-06-18

申请号：US14536371

申请日：2014-11-07

Applicant: APPLE INC.

Inventor： Sreevalsan Vallath ,  Deepankar Bhattacharjee ,  Navid Damji ,  Christian W. Mucke ,  Rafael L. Rivera-Barreto ,  Tarik Tabet

IPC: H04W48/18

CPC classification number: H04W48/18 ,  H04L5/001 ,  H04W48/20

Abstract: Systems and methods that enhance radio link performance in a multi-carrier environment. A method may be performed by a UE that includes scanning a plurality of carrier components for a primary cell, determining a first bandwidth of the primary cell, scanning for a secondary cell, determining a second bandwidth of the secondary cell, determining a maximum aggregated bandwidth by combining the first bandwidth and the second bandwidth and when the maximum aggregated bandwidth exceeds a bandwidth capability of the UE, performing a cell selection procedure to select one of the primary cell or the secondary cell based on a higher of the first bandwidth and the second bandwidth.

Abstract translation: 在多载波环境中增强无线电链路性能的系统和方法。 一种方法可以由UE执行，该UE包括扫描主小区的多个载波分量，确定主小区的第一带宽，二次小区的扫描，确定次小区的第二带宽，确定最大聚合带宽 通过组合第一带宽和第二带宽，并且当最大聚合带宽超过UE的带宽能力时，执行小区选择过程以基于第一带宽和第二带宽中的较高者选择主小区或辅小区中的一个 带宽。

公开(公告)号：US20150092708A1

公开(公告)日：2015-04-02

申请号：US14498861

申请日：2014-09-26

Applicant: Apple Inc.

Inventor： Li Su ,  Tarik Tabet ,  Navid Damji

IPC: H04W76/02 ,  H04W88/06

CPC classification number: H04W76/16 ,  H04W72/042 ,  H04W88/06

Abstract: Methods, apparatuses and computer-readable media are described that configure wireless circuitry of a wireless device. The wireless device establishes a connection to a first wireless network using first and second receiving signaling chains. The wireless device obtains a configuration processing delay time for the first wireless network and sends a first channel status report having a rank indicator value of one before starting a tune-away event at a time based on the obtained configuration processing delay time. The wireless device reconfigures at least one of the radio frequency signaling chains to receive signals from a second wireless network during the tune-away event. The wireless device subsequently sends a second channel status report having a rank indicator value greater than one before ending the tune-away event and reconfiguring the at least one of the radio frequency receive signaling chains back to the first wireless network.

Abstract translation: 描述了配置无线设备的无线电路的方法，设备和计算机可读介质。 无线设备使用第一和第二接收信令链建立到第一无线网络的连接。 所述无线装置获取所述第一无线网络的配置处理延迟时间，并且基于所获得的配置处理延迟时间，一次启动基于所述配置处理延迟时间的开始事件之前，发送具有秩指示值为1的第一信道状态报告。 无线设备在调谐离开事件期间重新配置至少一个射频信令链以从第二无线网络接收信号。 无线设备随后在结束调谐离开事件之前发送具有大于等于一个的秩指示符值的第二信道状态报告，并将射频接收信令链中的至少一个重新配置回第一无线网络。

公开(公告)号：US20150043481A1

公开(公告)日：2015-02-12

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: 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：US20140146763A1

公开(公告)日：2014-05-29

申请号：US14086414

申请日：2013-11-21

Applicant: Apple Inc.

Inventor： Samy Khay-Ibbat ,  Navid Damji ,  Sreevalsan Vallath ,  Sarma V. Vangala ,  Johnson O Sebeni

IPC: H04W72/08

CPC classification number: H04W28/0268 ,  H04W72/1236

Abstract: QoS based uplink data buffering while TTI bundling is enabled by a wireless user equipment (UE) device. The UE may establish a packet-switched connection with a network via a wireless link. The UE may receive, at a media access control (MAC) layer, an indication to enable TTI bundling. The UE may selectively buffer uplink data at an application layer based on the indication to enable TTI bundling. The uplink data may be buffered selectively based on Quality of Service (QoS) considerations. Uplink transmissions may subsequently be performed using TTI bundling.

Abstract translation: 基于QoS的上行链路数据缓冲，而TTI绑定由无线用户设备（UE）设备启用。 UE可以经由无线链路与网络建立分组交换连接。 在媒体接入控制（MAC）层，UE可以接收启用TTI绑定的指示。 基于用于启用TTI绑定的指示，UE可以选择性地缓冲应用层上的上行链路数据。 可以基于服务质量（QoS）考虑来选择性地缓冲上行链路数据。 随后可以使用TTI捆绑来执行上行链路传输。

公开(公告)号：US20140098694A1

公开(公告)日：2014-04-10

申请号：US14050256

申请日：2013-10-09

Applicant: Apple Inc.

Inventor： Navid Damji ,  Johnson O. Sebeni ,  Tarik Tabet

IPC: H04W52/02

CPC classification number: H04W52/0229 ,  H04B7/0877 ,  H04W76/27 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24

Abstract: Methods, apparatuses and computer readable media are described that configure wireless circuitry in a wireless communication device. The wireless communication device establishes a connection to a wireless network using wireless circuitry that includes a first radio frequency receive signal chain and a second radio frequency receive signal chain. The wireless communication device monitors uplink and downlink traffic activity communicated between the wireless communication device and the wireless network and measures downlink radio frequency receive signal conditions at the wireless communication device. The wireless communication device reconfigures the wireless circuitry to enable receive diversity or to disable receive diversity at the wireless communication device based on the monitored traffic activity and the measured downlink radio frequency receive signal conditions.

Abstract translation: 描述了在无线通信设备中配置无线电路的方法，设备和计算机可读介质。 无线通信设备使用包括第一射频接收信号链和第二射频接收信号链的无线电路建立到无线网络的连接。 无线通信设备监视在无线通信设备和无线网络之间传送的上行链路和下行链路业务活动，并测量无线通信设备的下行链路射频接收信号状况。 无线通信设备重新配置无线电路以使得能够基于所监视的业务活动和所测量的下行链路射频接收信号条件来在无线通信设备处接收分集或禁用接收分集。

公开(公告)号：US20140038607A1

公开(公告)日：2014-02-06

申请号：US13761746

申请日：2013-02-07

Applicant: APPLE INC.

Inventor： Shivesh Makharia ,  Navid Damji ,  Longda Xing ,  Johnson O. Sebeni

IPC: H04W36/00

CPC classification number: H04W36/30 ,  H04W36/0011 ,  H04W48/20 ,  H04W72/085 ,  H04W74/0833 ,  H04W76/19 ,  H04W76/27

Abstract: Performing cell re-selection by a wireless user equipment (UE) device. A first cell on which to camp may be selected. The UE may camp on the first cell in an idle-mode. The UE may be configured to perform searches for neighboring cells according to an idle-mode timeline while camping on the first cell. The UE may transmit a connection request to the first cell in order to transition the UE from the idle-mode to a connected-mode via the first cell. One or more searches for neighboring cells may be performed according to a connected-mode timeline after transmitting the connection request, in response to transmitting the connection request. The one or more searches may be performed before the UE establishes the connected-mode with the first cell.

Abstract translation: 由无线用户设备（UE）进行小区重选。 可以选择营地的第一个小区。 UE可以以空闲模式驻留在第一小区上。 UE可以被配置为在驻留在第一小区时根据空闲模式时间线执行对相邻小区的搜索。 UE可以向第一小区发送连接请求，以便经由第一小区将UE从空闲模式转换到连接模式。 响应于发送连接请求，可以在发送连接请求之后根据连接模式时间线来执行对于相邻小区的一个或多个搜索。 可以在UE与第一小区建立连接模式之前执行一个或多个搜索。

公开(公告)号：US20130309988A1

公开(公告)日：2013-11-21

申请号：US13861988

申请日：2013-04-12

Applicant: Apple Inc.

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

IPC: H04B1/10

CPC classification number: H04B1/1027 ,  H03G3/3078 ,  H04L5/0091

Abstract: Methods and apparatus for adjusting adaptive control loop behavior based on, for example measured artifacts of the radio environment. In one embodiment, a Long Term Evolution (LTE) user equipment (UE) adjusts one or more Automatic Gain Control (AGC) loops based on a measured Doppler spread of received signals. Specifically, one or more AGC parameters (e.g., set-point, loop gain, etc.) are selected based on a measured Doppler spread. The one or more AGC parameters are configured to optimize both the AGC headroom (e.g., dynamic range) and the signal to quantization plus noise ratio (SQNR) of the receiver under dynamic wireless fading channels for the detected Doppler.

Abstract translation: 基于例如无线电环境的测量伪像来调整自适应控制回路行为的方法和装置。 在一个实施例中，长期演进（LTE）用户设备（UE）基于所接收信号的测量多普勒扩展来调整一个或多个自动增益控制（AGC）环路。 具体地，基于测量的多普勒扩展来选择一个或多个AGC参数（例如，设定点，环路增益等）。 一个或多个AGC参数被配置为在检测到的多普勒的动态无线衰落信道下优化AGC余量（例如，动态范围）和接收机的信号到量化加噪声比（SQNR）。

公开(公告)号：US20130308510A1

公开(公告)日：2013-11-21

申请号：US13689568

申请日：2012-11-29

Applicant: APPLE INC.

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

IPC: H04W52/02

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.

Abstract translation: 以功率有效的方式在不连续接收（DRX）场景中提供自适应信道状态反馈（CSF）报告。 所描述的算法可能能够基于在CSF值稳定的偏移与要向基站发送CSF报告的偏移之间的比较，进行来自先前DRX周期的CSF的自适应决定。 如果CSF报告发送时CSF值不稳定，则可以使用来自先前的DRX周期的CSF报告。 或者，如果CSF报告发送时CSF值稳定，则可以确定生成新的CSF报告或使用先前的CSF报告。 可以基于包括信道条件和DRX周期长度的各种标准来进行后一种确定。