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公开(公告)号：US20140269373A1
公开(公告)日：2014-09-18
申请号：US13900197
申请日：2013-05-22
Applicant: Apple Inc.
Inventor： Srinivasan Nimmala , Navid Damji , Tarik Tabet , Li Su , Longda Xing , Zhu Ji
CPC classification number: H04B7/0877 , H04B7/0814 , H04B7/0822 , H04B7/0871 , H04W24/02 , H04W52/0225 , Y02D70/00 , Y02D70/1262 , Y02D70/1264 , Y02D70/23 , Y02D70/444
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.
Abstract translation: 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。
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公开(公告)号：US20140176660A1
公开(公告)日：2014-06-26
申请号：US14109665
申请日：2013-12-17
Applicant: Apple Inc.
Inventor： Samy Khay-Ibbat , Sarma V. Vangala , Paul V. Flynn , Wen Zhao , Sreevalsan Vallath , Navid Damji
Abstract: A method for transitioning a video call is provided. The method can include a wireless communication device participating in a video call with a remote communication device via a first video call session established over a connection between the wireless communication device and a first cellular network. The video call can include a packet switched video stream carried over a first bearer and an audio stream carried over a second bearer. The method can further include the wireless communication device determining a degradation in a connection quality for the first cellular network; transitioning to a legacy cellular network having a circuit switched domain in response to the degradation in connection quality for the first cellular network; establishing a second video call session on the legacy cellular network; and using the second video call session to continue the video call on the legacy cellular network.
Abstract translation: 提供了一种用于转换视频呼叫的方法。 该方法可以包括经由无线通信设备和第一蜂窝网络之间的连接建立的第一视频呼叫会话与远程通信设备参与视频呼叫的无线通信设备。 视频呼叫可以包括通过第一承载携带的分组交换视频流和通过第二承载携带的音频流。 该方法还可以包括无线通信设备确定第一蜂窝网络的连接质量的劣化; 响应于第一蜂窝网络的连接质量的劣化，转换到具有电路交换域的传统蜂窝网络; 在传统蜂窝网络上建立第二视频呼叫会话; 并且使用第二视频呼叫会话继续在传统蜂窝网络上的视频呼叫。
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公开(公告)号：US20140176659A1
公开(公告)日：2014-06-26
申请号：US14109659
申请日：2013-12-17
Applicant: Apple Inc.
Inventor： Samy Khay-Ibbat , Sarma V. Vangala , Paul V. Flynn , Wen Zhao , Sreevalsan Vallath , Navid Damji
CPC classification number: H04W76/16 , H04N7/147 , H04N7/148 , H04W28/0215 , H04W28/0252 , H04W28/08 , H04W76/34 , H04W84/12
Abstract: A method for offloading a video portion of a video call form a cellular network to a WLAN is provided. The method can include a wireless communication device participating in a video call with a remote device over a connection between the wireless communication device and a cellular network. The video call can include a first video stream carried over a first bearer on the cellular network and an audio stream carried over a second bearer on the cellular network. The method can further include the wireless communication device establishing a connection between the wireless communication device and a WLAN; performing a call setup procedure with the remote device to establish a second video stream over the WLAN; terminating the first video stream; and using the second video stream and the audio stream to continue the video call.
Abstract translation: 提供了将视频呼叫的视频部分从蜂窝网络卸载到WLAN的方法。 该方法可以包括通过无线通信设备和蜂窝网络之间的连接与远程设备参与视频呼叫的无线通信设备。 视频呼叫可以包括通过蜂窝网络上的第一承载携带的第一视频流和在蜂窝网络上的第二承载上承载的音频流。 该方法还可以包括无线通信设备建立无线通信设备与WLAN之间的连接; 与所述远程设备执行呼叫建立过程以在所述WLAN上建立第二视频流; 终止第一视频流; 并且使用第二视频流和音频流来继续视频通话。
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64.发明申请公开(公告)号：US20130322586A1
公开(公告)日：2013-12-05
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: H04L25/02
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.
Abstract translation: 在接收中断后恢复无线电信道测量和估计的方法和装置。 在本公开的一个示例性实施例中，至少部分地基于接收中断持续时间来提供用于信道估计的自适应解决方案。 在一个变型中，LTE UE至少基于中断持续时间来确定时域信道估计算法的加窗长度和/或“形状”。 在替代变型中，LTE UE基于中断持续时间确定滤波器的内插系数。
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公开(公告)号：US20130310092A1
公开(公告)日：2013-11-21
申请号：US13663653
申请日：2012-10-30
Applicant: APPLE INC.
Inventor： Tarik Tabet , Paul V. Flynn , Syed A. Mujtaba , Navid Damji , Zhu Ji , Sreevalsan Vallath
CPC classification number: H04L1/0003 , Y02D50/10
Abstract: Outer loop link adaptation for device resumption. A user equipment (UE) and base station (BS) may be in communication in a first network (e.g., an LTE network). Communication between the UE and the BS may be interrupted, e.g., due to a long fading environment, the UE tuning away to a second network (e.g., a CDMA network). Accordingly, the measured error rate may increase dramatically. After resumption from the interruption, a negative offset may be applied to a reported SINR value from the UE due to the previous increase in error rate. Upon improvement in the error rate, a larger, positive offset adjustment may be added to the negative offset, allowing the estimated SINR to return to reported SINR more quickly. Additionally, the error rate estimation may be adjusted to converge to a more recently measured more quickly by decreasing a feedback filter coefficient.
Abstract translation: 用于设备恢复的外环链路自适应。 用户设备（UE）和基站（BS）可以在第一网络（例如，LTE网络）中进行通信。 UE和BS之间的通信可能被中断，例如由于漫长的衰落环境，UE调谐到第二网络（例如，CDMA网络）。 因此，测量的误码率可能会急剧增加。 在从中断恢复之后，由于错误率的先前增加，可能对来自UE的所报告的SINR值应用负偏移。 在改进误差率时，可以将更大的正偏移调整添加到负偏移，从而允许估计的SINR更快地返回到所报告的SINR。 此外，可以通过减小反馈滤波器系数来调整误差率估计以收敛到更近的测量更快。
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Patent Agency Ranking
66.发明申请ADAPTIVE CHANNEL STATE FEEDBACK IN DISCONTINUOUS RECEPTION SCENARIOS BASED ON CONNECTION CHARACTERISTICS 有权基于连接特性的不连续接收情景下的自适应信道状态反馈公开(公告)号：US20130308509A1
公开(公告)日：2013-11-21
申请号：US13623911
申请日：2012-09-21
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 channel conditions, DRX cycle length, and/or the requirements of CSF reporting for current DRX cycle. The proposed approach can allow for more efficient power consumption related to CSF reports in DRX scenarios where new CSF reports have little or no impact to throughput.
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信道条件，DRX周期长度和/或针对当前DRX周期的CSF报告的要求，进行自适应决定以从先前的DRX周期传送CSF。 所提出的方法可以允许在DRX情景中与CSF报告相关的更有效的功率消耗，其中新的CSF报告对吞吐量几乎没有或没有影响。
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公开(公告)号：US10341957B2
公开(公告)日：2019-07-02
申请号：US16241107
申请日：2019-01-07
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
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.
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公开(公告)号：US10165512B2
公开(公告)日：2018-12-25
申请号：US14729936
申请日：2015-06-03
Applicant: Apple Inc.
Inventor： Sai Sravan Bharadwaj Karri , Navid Damji , Sachin J. Sane
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 via one or more component carriers to a wireless network using wireless circuitry that includes multiple radio frequency receive signal chain. The wireless communication device monitors traffic activity and measures downlink radio frequency receive signal conditions for each component carrier. The wireless communication device reconfigures the wireless circuitry to use a number of RF receive signal chains that matches a maximum supportable modulation and coding scheme (MCS) value for each component carrier to MCS values assigned by the wireless network to the respective component carrier. The wireless communication device reduces the number of RF receive signal chains for a component carrier only when reliable decoding of the physical downlink control channel (PDCCH) and/or the physical hybrid automatic repeat request indicator channel (PHICH) can be reliably decoded.
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公开(公告)号：US09935859B2
公开(公告)日：2018-04-03
申请号：US14870328
申请日：2015-09-30
Applicant: Apple Inc.
Inventor： Sarma V. Vangala , Tarik Tabet , Swaminathan Balakrishnan , Yuchul Kim , Navid Damji , Sreevalsan Vallath , Samy Khay-Ibbat , Syed Aon Mujtaba
IPC: H04W24/00 , H04L12/26 , H04W24/06 , H04W24/08 , H04B17/309
CPC classification number: H04L43/0888 , H04B17/309 , H04L43/10 , H04W24/06 , H04W24/08
Abstract: Loading estimation of 3GPP networks. One or more metrics relating to a cell of a 3GPP network may be measured. Loading of the cell may be estimated based on the one or more metrics. The metrics may include metrics measured, estimated, or derived at multiple layers, possibly including one or more of physical layer, radio link control layer, radio resource control layer, or application layer metrics.
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公开(公告)号：US09930600B2
公开(公告)日：2018-03-27
申请号：US14841920
申请日：2015-09-01
Applicant: Apple Inc.
Inventor： Shivesh Makharia , Navid Damji , Longda Xing , Johnson O. Sebeni
CPC classification number: H04W36/30 , H04W36/0011 , H04W48/20 , H04W72/085 , H04W74/0833 , H04W76/19 , H04W76/27
Abstract: Performing cell re-selection by a device. A first cell on which to camp may be selected. The device may camp on the first cell in an idle-mode. The device may be configured to perform searches for neighboring cells according to an idle-mode timeline while camping on the first cell. The device may transmit a connection request to the first cell in order to transition the device 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 device establishes the connected-mode with the first cell.
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