公开(公告)号：US09924515B2

公开(公告)日：2018-03-20

申请号：US14661543

申请日：2015-03-18

Applicant: Apple Inc.

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

IPC: H04W72/04 ,  H04W52/36 ,  H04W52/14 ,  H04W52/16

CPC classification number: H04W72/0453 ,  H04W52/146 ,  H04W52/16 ,  H04W52/367 ,  Y02D70/00

Abstract: A method for dynamically selecting an A-MPR value to apply for an uplink transmission is provided. The method can include a wireless communication device receiving an indication from a network that A-MPR should be applied for uplink transmissions within a frequency band used for communication between the wireless communication device and the network. The method can further include the wireless communication device receiving an RB allocation for a subset of RB's within the frequency band from the network. The method can additionally include the wireless communication device determining an allocation ratio and a distribution characteristic of the allocated subset of RB's within the frequency band. The method can also include the wireless communication device selecting an A-MPR value to apply based at least in part on the allocation ratio and the distribution characteristic. The method can further include the wireless communication device applying the selected A-MPR.

公开(公告)号：US20180049030A1

公开(公告)日：2018-02-15

申请号：US15671614

申请日：2017-08-08

Applicant: Apple Inc.

Inventor： Venkateswara Rao Manepalli ,  Srinivasan Nimmala ,  Farouk Belghoul

IPC: H04W12/08 ,  H04W36/00 ,  H04W12/06 ,  H04W76/02 ,  H04W48/16 ,  H04W76/06 ,  H04W36/08

CPC classification number: H04W12/08 ,  H04W12/06 ,  H04W36/0061 ,  H04W36/08 ,  H04W36/38 ,  H04W48/16 ,  H04W76/18 ,  H04W76/30

Abstract: This disclosure relates to techniques for securely performing connection release and network redirection in a wireless communication system. A wireless device may establish a radio resource control (RRC) connection with a first cell. The wireless device may receive a RRC connection release message from the first cell. The RRC connection release message may include an indication to redirect the wireless device to a second cell. The RRC connection with the first cell may be released. It may be determined whether security has been established with the first cell when the indication to redirect the wireless device to the second cell is received. A new serving cell may be selected based at least in part on whether security has been established with the first cell when the indication to redirect the wireless device to the second cell is received.

公开(公告)号：US09794015B2

公开(公告)日：2017-10-17

申请号：US14667745

申请日：2015-03-25

Applicant: Apple Inc.

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

IPC: H04W4/00 ,  H04J11/00 ,  H04L25/02 ,  H04W48/16

CPC classification number: H04J11/0079 ,  H04J11/005 ,  H04L25/0204 ,  H04L25/0228 ,  H04W48/16

Abstract: This disclosure relates to performing cell measurements in unlicensed frequency bands and/or in channels with interference. According to some embodiments, a wireless user equipment (UE) device may define a reference symbol vector for a cell. Each respective element of the reference symbol vector may correspond to a respective subcarrier of the cell that carries a respective reference symbol. The UE may perform channel estimation at each respective element of the reference symbol vector. The UE may estimate the cell strength of the cell by cross-correlating channel estimates of different elements of the reference symbol vector.

公开(公告)号：US09769712B2

公开(公告)日：2017-09-19

申请号：US14790041

申请日：2015-07-02

Applicant: Apple Inc.

Inventor： Huarui Liang ,  Zhiwei Wang ,  David Boettger ,  Dawei Zhang ,  Farouk Belghoul ,  Krisztian Kiss

IPC: H04W36/00 ,  H04W36/14

CPC classification number: H04W36/0022 ,  H04W36/14

Abstract: Performing a circuit-switched fallback (CSFB) call with improved reliability. A request to establish a CSFB call may be received by a UE that is currently in a pool overlap area. The network resource controller, or the base station, transmits information to the UE which indicates the pools in which neighboring cells are operating. The UE uses this information to select a circuit-switched cell on which to operate for the CSFB operation, wherein the selected CS cell is in the same pool area as the current pool area. This prevents the UE from inadvertently camping on a CS cell in a different pool area, which could cause call failure on some networks. The information provided by the base station may comprise a pool area id, or may comprise mapping relation information that is useable by the UE to determine the current pool area.

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：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：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。

公开(公告)号：US20160205671A1

公开(公告)日：2016-07-14

申请号：US14980710

申请日：2015-12-28

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Awais M. Hussain

IPC: H04W72/04 ,  H04W48/16

CPC classification number: H04W72/042 ,  H04W48/12 ,  H04W48/16

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 a master information block (MIB), a first system information block (SIB), and second SIBs. The first SIB and the second SIBs may be configured for different device categories, and may accordingly have different characteristics. For example, the first SIB may be configured for link budget limited devices, and may include information specific to such devices and/or may exclude information not relevant to such devices or not critical to accessing the cell. In some instances, the first SIB may also include information from the MIB, such that at least some devices may be able to decode the first SIB and gain cell access without decoding the MIB.

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，基站可以发送主信息块（MIB），第一系统信息块（SIB）和第二SIB。 第一SIB和第二SIB可以被配置用于不同的设备类别，并且因此可以具有不同的特性。 例如，第一SIB可以被配置用于链路预算限制的设备，并且可以包括特定于这些设备的信息和/或可以排除与这样的设备不相关的信息，或者对访问小区不是至关重要的。 在一些情况下，第一SIB还可以包括来自MIB的信息，使得至少一些设备可以能够解码第一SIB并且增益小区接入而不解码MIB。

公开(公告)号：US09363704B2

公开(公告)日：2016-06-07

申请号：US14310970

申请日：2014-06-20

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  S. Aon Mujtaba

IPC: H04W72/04 ,  H04W28/02 ,  H04L1/00 ,  H04W72/08 ,  H04W76/02

CPC classification number: H04W28/0263 ,  H04L1/00 ,  H04L1/0059 ,  H04L1/0066 ,  H04L1/0086 ,  H04L47/2475 ,  H04W72/087 ,  H04W76/15

Abstract: Selecting a physical channel for cellular communication based on application traffic pattern. A radio bearer may be established between a wireless device and a base station. A physical downlink channel may be selected for the radio bearer. The physical downlink channel may be selected based on an application traffic pattern of an application associated with the radio bearer. In some instances, a physical uplink channel may also be selected based on an application traffic pattern of an application associated with the radio bearer.

Abstract translation: 基于应用流量模式选择用于蜂窝通信的物理信道。 可以在无线设备和基站之间建立无线承载。 可以为无线承载选择物理下行链路信道。 可以基于与无线承载相关联的应用的应用业务模式来选择物理下行链路信道。 在一些情况下，还可以基于与无线电承载相关联的应用的应用业务模式来选择物理上行链路信道。