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1. 发明授权

US10177938B2 Device and method for adaptive channel estimation 有权
公开(公告)号：US10177938B2
公开(公告)日：2019-01-08
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： H04W4/00 , H04L25/02 , H04W4/06 , H04L27/26 , H04L12/18 , H04L5/00
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.

2. 发明授权

US09980225B2 Methods and apparatus for power saving in discontinuous reception-adaptive neighbor cell search duration 有权
公开(公告)号：US09980225B2
公开(公告)日：2018-05-22
申请号：US14872257
申请日：2015-10-01
申请人： Apple Inc.
发明人： Navid Damji , Zhu Ji , Johnson Sebeni , Jason Shi , Li Su
IPC分类号： H04L1/00 , H04W52/02 , H04W36/00 , H04B17/309 , H04W76/04
CPC分类号： 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
摘要： 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.

3. 发明授权

US09712306B2 Adaptive link adaptation for wireless communications 有权
公开(公告)号：US09712306B2
公开(公告)日：2017-07-18
申请号：US14157509
申请日：2014-01-16
申请人： Apple Inc.
发明人： Zhu Ji , Johnson O. Sebeni , Navid Damji
IPC分类号： H04L5/00 , H04L1/00 , H04L1/20
CPC分类号： H04L5/0053 , H04L1/0003 , H04L1/0009 , H04L1/0019 , H04L1/203 , H04L5/0055
摘要： A wireless communication system is presented in which subframe-specific link adaptation is performed. A mobile device can transmit a signal that informs a base station whether a particular subframe was received successfully. Additionally the mobile device can calculate channel state information (CSI) for a subframe and report the CSI to a base station. The reported CSI may or may not include an indicator for informing the base station about from which type of subframe the CSI was derived. The base station can receive the signal, the CSI and/or the indicator. Based on what information the base station has received, it performs subframe-specific BLER filtering and subframe-specific link adaptation scheduling and MCS adjustments.

4. 发明授权

US09591574B2 Dynamic receive diversity selection for LTE 有权
标题翻译： LTE的动态接收分集选择
公开(公告)号：US09591574B2
公开(公告)日：2017-03-07
申请号：US14050256
申请日：2013-10-09
申请人： Apple Inc.
发明人： Navid Damji , Johnson O. Sebeni , Tarik Tabet
IPC分类号： H04W52/02 , H04B7/08 , H04W76/04
CPC分类号： H04W52/0229 , H04B7/0877 , H04W76/27 , Y02D70/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/24
摘要： 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.
摘要翻译：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。

5. 发明授权

US09554359B2 Dynamic antenna tuner setting for carrier aggregation scenarios 有权
标题翻译：动态天线调谐器设置，用于载波聚合场景
公开(公告)号：US09554359B2
公开(公告)日：2017-01-24
申请号：US14175502
申请日：2014-02-07
申请人： Apple Inc.
发明人： Tarik Tabet , Navid Damji , Ming Hu , Christian W. Mucke , Vinay R. Majjigi , Syed A. Mujtaba , Johnson O. Sebeni
IPC分类号： H04W4/00 , H04W72/02 , H04W74/02 , H04L25/00 , H04W52/00 , H04W52/34 , H04L5/00 , H04W72/12 , H04W88/06 , H04W52/24 , H04W52/36 , H04W52/42
CPC分类号： H04W72/02 , H04L5/0039 , H04L5/0041 , H04L25/00 , H04W52/00 , H04W52/245 , H04W52/346 , H04W52/365 , H04W52/42 , H04W72/1215 , H04W74/02 , H04W88/06
摘要： Apparatus and methods for dynamically adjusting radio frequency circuitry in a wireless communication device are disclosed. The wireless communication device can receive downlink communication using carrier aggregation through a primary component carrier and a secondary component carrier. When carrier aggregation is not enabled, the wireless communication device adjusts the radio frequency circuitry based on default values. When carrier aggregation is enabled, the wireless communication device evaluates radio frequency conditions for the primary and secondary component carriers and adjusts the radio frequency circuitry based on whether uplink and/or downlink communication is power constrained. When uplink communication is power constrained, the wireless communication device adjusts the radio frequency circuitry for optimal performance via the primary component carrier, and when uplink communication is not power constrained, the wireless communication device adjusts the radio frequency circuitry for optimal performance via the combination of the primary and secondary component carriers used for carrier aggregation.
摘要翻译：公开了一种在无线通信设备中动态调整射频电路的设备和方法。无线通信设备可以通过主要分量载波和辅助分量载波来使用载波聚合来接收下行链路通信。当未启用载波聚合时，无线通信设备将根据默认值调整射频电路。当启用载波聚合时，无线通信设备评估主要和次要分量载波的射频条件，并且基于上行链路和/或下行链路通信是否受功率约束来调整射频电路。当上行链路通信功率受限时，无线通信设备通过主要分量载波调整射频电路以获得最佳性能，并且当上行链路通信不受功率限制时，无线通信设备通过组合来调整射频电路以获得最佳性能用于载波聚合的主要和次要分量载波。

6. 发明授权

US09544934B2 Device and method for antenna synchronization and selection 有权
标题翻译：天线同步和选择的装置和方法
公开(公告)号：US09544934B2
公开(公告)日：2017-01-10
申请号：US14732105
申请日：2015-06-05
申请人： APPLE INC.
发明人： Hsin-You Liu , Ruben Caballero , Mohit Narang , Peter M. Agboh , Paul V. Flynn , Qiong Wu , Nicholas M. McDonnell , Navid Damji , Ming Hu , Wen Zhao
IPC分类号： H04B7/00 , H04W76/02 , H04W4/00
CPC分类号： H04W76/14 , H04W4/80
摘要： A device and method selects an antenna configuration. The method performed at a user equipment includes determining at least one communication functionality that is being used, each communication functionality configured to utilize at least one antenna in a multi-antenna arrangement of the user equipment. The method includes receiving a first indication of whether a cellular communication functionality is being used, the cellular communication functionality configured to utilize at least one antenna in the multi-antenna arrangement. The method includes receiving a second indication of whether a coexistence condition is present. The method includes determining an antenna configuration for the multi-antenna arrangement to be used by the determined communication functionality based upon the determined communication functionality, the first indication, and the second indication. The method includes configuring the multi-antenna arrangement for the determined communication functionality based upon the antenna configuration.
摘要翻译：设备和方法选择天线配置。在用户设备处执行的方法包括确定正在使用的至少一个通信功能，每个通信功能被配置为在用户设备的多天线布置中利用至少一个天线。该方法包括接收蜂窝通信功能是否正在被使用的第一指示，所述蜂窝通信功能被配置为在多天线布置中利用至少一个天线。该方法包括接收是否存在共存条件的第二指示。该方法包括基于所确定的通信功能，第一指示和第二指示，确定由所确定的通信功能使用的多天线布置的天线配置。该方法包括基于天线配置为确定的通信功能配置多天线布置。

7. 发明授权

US09426672B2 Apparatus and methods for network detection and mitigation of hybrid client device operation 有权
标题翻译：用于网络检测和缓解混合客户端设备操作的装置和方法
公开(公告)号：US09426672B2
公开(公告)日：2016-08-23
申请号：US13851016
申请日：2013-03-26
申请人： Apple Inc.
发明人： Jianxiong Shi , Johnson O. Sebeni , Li Su , Navid Damji , Paul V. Flynn , Sarma V. Vangala , Sreevalsan Vallath , Thanigaivelu Elangovan , Zhu Ji
IPC分类号： H04W24/02 , H04W76/02 , H04W60/00 , H04L1/00 , H04W72/12 , H04W88/06 , H04W48/02
CPC分类号： H04W24/02 , H04L1/0026 , H04W48/02 , H04W72/1215 , H04W76/19 , H04W88/06
摘要： Methods and apparatus for network-based detection and mitigation of hybrid client device reception outage events. For example, in one embodiment, a cellular device uses a single-radio solution to support circuit-switched calls on a CDMA 1X network and packet-switched calls on LTE. Periodically, the cellular device tunes away from LTE and monitors CDMA 1X activity, and vice versa. During these tuned-away periods, the network adjusts operation to mitigate adverse effects (e.g., underutilization of radio resources, synchronization loss, etc.).
摘要翻译：用于基于网络的检测和缓解混合客户端设备接收中断事件的方法和装置。例如，在一个实施例中，蜂窝设备使用单无线电解决方案来支持CDMA 1X网络上的电路交换呼叫和LTE上的分组交换呼叫。周期性地，蜂窝设备调谐远离LTE并监视CDMA 1X活动，反之亦然。在这些调谐期间，网络调整操作以减轻不利影响（例如，无线电资源利用不足，同步丢失等）。

8. 发明授权

US09420523B2 Reducing radio frequency band scan time by a wireless communication device 有权
标题翻译：通过无线通信设备减少无线电频段扫描时间
公开(公告)号：US09420523B2
公开(公告)日：2016-08-16
申请号：US14088271
申请日：2013-11-22
申请人： Apple Inc.
发明人： Navid Damji , Sree Ram Kodali , Johnson O. Sebeni , Zhu Ji
IPC分类号： H04M1/00 , H04W48/16 , H04W36/00
CPC分类号： H04W48/16 , H04W36/0083
摘要： Methods and apparatuses to reduce a time to scan one or more frequency channel bands by a wireless communication device are disclosed. The methods include performing, at the wireless communication device, a power scan of a band of radio frequencies; determining a maximum power level for a frequency channel in the band of radio frequencies found by the power scan; comparing the maximum power level to a threshold power level; in an instance in which the maximum power level does not equal or exceed the threshold power level, attempting acquisition on a first number of frequency channels; and in an instance in which the maximum power equals or exceeds the threshold power level, attempting acquisition on a second number of frequency channels. The second number of frequency channels is greater than the first number of frequency channels.
摘要翻译：公开了减少由无线通信设备扫描一个或多个频道频带的时间的方法和装置。所述方法包括在所述无线通信设备处执行无线频带的功率扫描; 确定由功率扫描发现的射频频带中的频道的最大功率电平; 将最大功率电平与阈值功率电平进行比较; 在最大功率电平不等于或超过阈值功率电平的情况下，尝试在第一数量的频道上进行采集; 并且在最大功率等于或超过阈值功率电平的情况下，尝试在第二数量的频道上进行采集。第二数量的频道大于第一数量的频道。

9. 发明授权

US09319985B2 Reducing power consumption through reduced measurement frequency 有权
标题翻译：降低测量频率降低功耗
公开(公告)号：US09319985B2
公开(公告)日：2016-04-19
申请号：US14151969
申请日：2014-01-10
申请人： Apple Inc.
发明人： Sarma V. Vangala , Swaminathan Balakrishnan , Wael S. Barakat , Navid Damji , Tarik Tabet
IPC分类号： H04W52/02 , H04W36/00 , H04W24/10 , H04W76/02 , H04W88/06
CPC分类号： H04W36/32 , H04W24/10 , H04W36/0061 , H04W36/0083 , H04W36/0088 , H04W52/0225 , H04W52/0254 , H04W76/15 , H04W88/06 , Y02D70/122 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264
摘要： A method for reducing power consumption by a wireless communication device is disclosed. The method can include the wireless communication device performing a first measurement of an alternative cell during a first measurement gap; sending a first measurement report generated based on the first measurement to the serving cell; storing the first measurement report; determining a mobility state of the wireless communication device; comparing the mobility state to a mobility threshold criterion; resending the first measurement report to the serving network as a report for a second measurement gap in an instance in which the mobility state satisfies the mobility criterion; and performing a second measurement of the alternative cell during the second measurement gap and sending a second measurement report generated based on the second measurement to the serving cell in an instance in which the mobility state does not satisfy the mobility threshold criterion.
摘要翻译：公开了一种降低无线通信设备的功耗的方法。该方法可以包括在第一测量间隙期间执行替代单元的第一测量的无线通信设备; 向所述服务小区发送基于所述第一测量生成的第一测量报告; 存储第一测量报告; 确定所述无线通信设备的移动性状态; 将移动性状态与移动性阈值标准进行比较; 在移动性状态满足移动性准则的情况下，将第一测量报告重新发送到服务网络作为用于第二测量间隙的报告; 以及在所述第二测量间隙期间执行所述备选小区的第二测量，并且在所述移动性状态不满足所述移动性阈值准则的情况下，将基于所述第二测量生成的第二测量报告发送给所述服务小区。

10. 发明申请

US20160081023A1 Adaptive Channel State Feedback Based on Channel Estimation Characteristics and Reporting Requirements 审中-公开
公开(公告)号：US20160081023A1
公开(公告)日：2016-03-17
申请号：US14950608
申请日：2015-11-24
申请人： Apple Inc.
发明人： Zhu Ji , Navid Damji , Johnson O. Sebeni
IPC分类号： H04W52/02 , H04B7/06 , H04W72/12 , H04W76/04
CPC分类号： 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
摘要： 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.

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