公开(公告)号：US20170195113A1

公开(公告)日：2017-07-06

申请号：US15398114

申请日：2017-01-04

Applicant: Apple Inc.

Inventor： Lydi Smaini ,  Tarik Tabet ,  Moustafa M. Elsayed

IPC: H04L7/033 ,  H04W72/04

CPC classification number: H03C3/0916 ,  H03C3/0941 ,  H03C3/095 ,  H03C3/0966 ,  H03C5/00 ,  H04L27/00

Abstract: This disclosure relates to an apparatus, system, and method for generating uplink transmissions using a polar architecture including a phase locked loop with potential for two point injection. According to some embodiments, frequency resources allocated for a transmission may be determined. A cartesian baseband signal may be generated for the uplink transmission. The cartesian baseband signal may be converted to a polar baseband signal, including a baseband phase signal and an amplitude signal. Modulation parameters, potentially including whether to use one point injection or two point injection with a phase locked loop, may be determined. The baseband phase signal may be upconverted to an RF phase signal according to the determined modulation parameters. The RF phase signal may be amplified according to the amplitude signal to produce an RF signal. The RF signal may be transmitted.

公开(公告)号：US09686740B2

公开(公告)日：2017-06-20

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 ,  H04L5/00 ,  H04W48/20

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.

公开(公告)号：US20170142665A1

公开(公告)日：2017-05-18

申请号：US15349816

申请日：2016-11-11

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Samy Khay-Ibbat ,  Awais M. Hussain

IPC: H04W52/24 ,  H04W72/04 ,  H04W52/26 ,  H04W72/08 ,  H04L5/00

CPC classification number: H04W52/241 ,  H04L5/005 ,  H04L5/0057 ,  H04W52/262 ,  H04W52/32 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/085

Abstract: A link-budget-limited wireless communication device (UE) may implement improved radio link monitoring procedures for enhancing the link-budget of the UE. The UE may monitor the radio link and may determine whether the radio link can support a lowest acceptable link quality according to a hysteresis-based comparison that uses threshold values to determine error rates associated with a physical control channel. The UE may also identify itself to the network as a link-budget-limited device, and the network may enable special link-budget enhancing features for the UE, including boosting the power of the resource elements (REs) carrying physical channel signaling/data to the UE. The UE may detect the presence of power boost and may estimate/determine the power boost level. The UE may modify the threshold values based on the power boost detection and/or results of the power boost level estimation/determination, and may use the modified threshold values for determining radio link quality during radio link monitoring.

公开(公告)号：US20170105218A1

公开(公告)日：2017-04-13

申请号：US15385551

申请日：2016-12-20

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Dawei Zhang ,  Huarui Liang

IPC: H04W72/04 ,  H04W72/12 ,  H04W8/00 ,  H04M11/06 ,  H04L5/00

CPC classification number: H04W72/0453 ,  H04L5/0048 ,  H04L5/0098 ,  H04L27/0006 ,  H04M11/062 ,  H04W8/005 ,  H04W72/0406 ,  H04W72/12 ,  H04W84/12 ,  H04W88/06 ,  H04W88/10

Abstract: This disclosure relates to Wi-Fi signaling in conjunction with cellular communication in unlicensed frequency bands for efficient co-existence. According to one embodiment, a cell may be established between a cellular base station and a wireless user equipment device on a frequency channel in an unlicensed frequency band. A cellular communication may be scheduled between the base station and the user equipment device. A Wi-Fi signal may be transmitted on the frequency channel in conjunction with the scheduled cellular communication. The Wi-Fi signal may indicate a length of the scheduled cellular communication using Wi-Fi signaling. The scheduled cellular communication may be performed via the cell.

公开(公告)号：US09622289B2

公开(公告)日：2017-04-11

申请号：US14310472

申请日：2014-06-20

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Syed Aon Mujtaba ,  Dawei Zhang

IPC: H04W76/04 ,  H04L12/26 ,  H04L12/24

CPC classification number: H04W76/28 ,  H04L41/147 ,  H04L43/0858 ,  H04L43/16

Abstract: End-to-end delay adaptation in conjunction with connected discontinuous reception (C-DRX) mode communication during cellular voice calls. A Voice over LTE (VoLTE) call may be established between a first wireless user equipment (UE) device and a second UE. End-to-end delay between real-time transport protocol (RTP) layers of the first UE and the second UE for the VoLTE call may be estimated. The end-to-end delay may be compared with one or more thresholds A C-DRX cycle length for the VoLTE call may be modified based on comparing the end-to-end delay with the one or more thresholds.

公开(公告)号：US20170055246A1

公开(公告)日：2017-02-23

申请号：US15175102

申请日：2016-06-07

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Awais M. Hussain ,  Syed Aon Mujtaba ,  Moustafa M. Elsayed

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04W48/12

Abstract: This disclosure relates to providing system information for cell access to link budget limited devices. According to some embodiments, a base station may transmit an announcement information block (AIB) in a downlink shared data channel (e.g., PDSCH), wherein the AIB contains information useable by a UE in determining the location of system information in the downlink shared data channel. The UE can thus determine the location of and decode system information without having to decode a downlink control channel (e.g., PDCCH). This may be important for certain classes of devices, such as link budget limited devices, which have issues in decoding the downlink control channel. Improved paging scheduling techniques are also disclosed which more efficiently use PDCCH paging resources.

Abstract translation: 本公开涉及提供用于小区接入链路预算受限设备的系统信息。 根据一些实施例，基站可以在下行链路共享数据信道（例如，PDSCH）中发送通告信息块（AIB），其中，AIB包含UE可用于确定下行链路共享数据中的系统信息的位置的信息 渠道。 因此，UE可以确定系统信息的位置并对其进行解码，而无需解码下行链路控制信道（例如，PDCCH）。 这对于在解码下行链路控制信道方面存在问题的某些类型的设备（例如链路预算受限设备）可能是重要的。 还公开了更有效地使用PDCCH寻呼资源的改进的寻呼调度技术。

公开(公告)号：US09554283B2

公开(公告)日：2017-01-24

申请号：US14095277

申请日：2013-12-03

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Dawei Zhang ,  Wen Zhao

IPC: H04W16/14 ,  H04W72/04 ,  H04L5/00 ,  H04W72/08

CPC classification number: H04W16/14 ,  H04L5/001 ,  H04W72/0453 ,  H04W72/085

Abstract: Carrier aggregation using unlicensed frequency bands. A primary carrier for communication between a base station (BS) and a wireless user equipment (UE) device may be configured according to a first wireless communication technology. The primary carrier may be on a licensed frequency band. A secondary carrier for communication between the BS and the UE may also be configured according to a first wireless communication technology. The secondary carrier may be on an unlicensed frequency band. Channel conditions for each of multiple possible channels of the unlicensed frequency band may be assessed according to a second wireless communication technology as part of configuring the secondary carrier.

Abstract translation: 使用未许可频段的载波聚合。 可以根据第一无线通信技术来配置用于基站（BS）和无线用户设备（UE）设备之间的通信的主载波。 主载波可以在授权频带上。 用于BS和UE之间的通信的辅助载波也可以根据第一无线通信技术进行配置。 次级载波可以在未许可的频带上。 作为配置辅助载波的一部分，可以根据第二无线通信技术来评估非许可频带的多个可能信道中的每一个的信道条件。

公开(公告)号：US09537642B2

公开(公告)日：2017-01-03

申请号：US14502420

申请日：2014-09-30

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Dawei Zhang

IPC: H04W80/04 ,  H04W88/06 ,  H04W28/04 ,  H04W72/04 ,  H04L5/00 ,  H04B1/715 ,  H04W28/08 ,  H04L27/00 ,  H04W84/12 ,  H04W16/14

CPC classification number: H04L5/0073 ,  H04B1/715 ,  H04B2001/7154 ,  H04L5/001 ,  H04L5/0012 ,  H04L27/0006 ,  H04W16/14 ,  H04W28/085 ,  H04W72/0453 ,  H04W84/12

Abstract: Apparatus and methods for frequency hopping among a set of frequency channels used for secondary cells by wireless devices operating with carrier aggregation across a combination of licensed and unlicensed radio frequency (RF) bands are described. A wireless device establishes a connection with an eNodeB using a primary component carrier (PCC) of a primary cell in a licensed radio frequency band. The wireless device obtains a configuration for a secondary cell operating in the unlicensed radio frequency band from the eNodeB, the configuration including a set of RF channels and a frequency-hopping pattern for communicating via a secondary component carrier in the secondary cell. The wireless device transmits to or receives from the eNodeB, via the SCC during a first hop of the frequency-hopping pattern using a first frequency channel in the set of frequency channels, and using a second frequency channel during a second hop.

Abstract translation: 描述了通过在许可和非许可射频（RF）频带的组合上以载波聚合操作的无线设备用于二次小区的一组频道中的跳频的装置和方法。 无线设备使用许可无线电频带中的主小区的主分量载波（PCC）建立与eNodeB的连接。 无线设备获得来自eNodeB的未授权无线电频带中工作的二级小区的配置，该配置包括一组RF信道和用于经二次小区中的辅助分量载波进行通信的跳频模式。 无线设备在频率跳频模式的第一跳期间使用频率组中的第一频率信道，以及在第二跳期间使用第二频率信道，经由SCC经由SCC发送或接收。

公开(公告)号：US09525453B2

公开(公告)日：2016-12-20

申请号：US14300290

申请日：2014-06-10

Applicant: Apple Inc.

Inventor： Konstantinos Sarrigeorgidis ,  Tarik Tabet ,  Syed A Mujtaba

IPC: H04L27/00 ,  H04B1/54 ,  H04B1/12

CPC classification number: H04B1/54 ,  H04B1/12 ,  H04B1/123 ,  H04B1/525

Abstract: A transceiver device may include a transmit path that generates a modulated transmit signal based on a baseband signal, and a receive path that receives a receive signal, which is subject to third-order order distortion caused by intermodulation noise resulting from a continuous wave blocker intermodulating with transmit leakage from the transmit path. The transceiver may also include a compensation path that models portions of the transmit path and the receive path, and generates a replica signal representative of the third-order order distortion according to at least a specified function and the modeled portions of the transmit path and the receive path. The compensation path also filters the replica signal and subtracts the filtered replica signal from the receive signal to eliminate the third-order order distortion caused by the intermodulation noise. The filtering of the replica signal may be performed by programmable finite impulse response filters.

Abstract translation: 收发器设备可以包括基于基带信号生成调制的发送信号的发送路径和接收接收信号的接收路径，该接收信号受到由连续波阻塞器互调产生的互调噪声引起的三阶失真 来自发射路径的发射泄漏。 收发机还可以包括对发送路径和接收路径的部分进行建模的补偿路径，并且根据至少一个指定的功能和发送路径的建模部分和生成表示三阶失真的副本信号， 接收路径。 补偿路径还对复制信号进行滤波，并从接收信号中减去滤波后的复制信号，以消除由互调噪声引起的三阶失真。 可以通过可编程有限脉冲响应滤波器来执行复制信号的滤波。

公开(公告)号：US20160353316A1

公开(公告)日：2016-12-01

申请号：US15096138

申请日：2016-04-11

Applicant: Apple Inc.

Inventor： David Boettger ,  Tarik Tabet ,  Samy Khay-Ibbat ,  Farouk Belghoul ,  Ajoy K. Singh ,  Thanigaivelu Elangovan ,  Rafael L. Rivera-Barreto

IPC: H04W28/02 ,  H04W36/00

CPC classification number: H04W36/0066 ,  H04W36/0022 ,  H04W36/24 ,  H04W72/1221 ,  H04W72/1231 ,  H04W88/06

Abstract: Wireless devices, networks and methods may operate to have a wireless device cause a base station to trigger voice call continuity handovers responsive to the quality of the cellular radio link in addition to the base station triggering such handovers based on location or mobility. Furthermore, wireless communication devices may also perform monitoring of multiple buffers operating within the wireless communication device and associated with different respective communication layers, in addition to monitoring the quality of the cellular radio link, to perform intelligent dropping/discarding and/or scheduling of packets at the wireless communications device. Any one or more of these features may improve the ability of the wireless communications device to achieve stated Voice over Long Term Evolution (VoLTE) performance benchmarks in the context of the realities of current VoLTE networks.

Abstract translation: 除了基站基于位置或移动性触发这种切换之外，无线设备，网络和方法可以操作以使无线设备响应于蜂窝无线电链路的质量而使基站触发语音呼叫连续性切换。 此外，除了监视蜂窝无线电链路的质量之外，无线通信设备还可以对在无线通信设备内操作并且与不同的相应通信层相关联的多个缓冲器执行监视，以执行智能丢弃/丢弃和/或调度分组 在无线通信设备。 这些特征中的任何一个或多个可以提高无线通信设备在当前VoLTE网络的实际情况下实现所述语音长期演进（VoLTE）性能基准的能力。