公开(公告)号：US09356808B2

公开(公告)日：2016-05-31

申请号：US14496969

申请日：2014-09-25

Applicant: APPLE INC.

Inventor： Navid Damji ,  Tarik Tabet ,  Johnson Sebeni ,  Syed Aon Mujtaba

IPC: H04W52/02 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04L25/0228 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/024 ,  H04W52/0229 ,  H04W52/0245 ,  Y02D70/1262 ,  Y02D70/23

Abstract: A station performing a method to toggle a channel estimation setting between a full channel estimation that includes estimating the channel based upon a predetermined number of received reference symbols prior to a current subframe and a partial channel estimation that includes estimating the channel based upon a subset of the predetermined number of received reference symbols. The method includes changing the setting from full to partial when a predetermined number of consecutive subframes immediately prior to the current subframe had no downlink allocated and a reliability value indicates that control signals are capable of being reliably received. The method also includes changing the setting from partial to full when the current subframe had a downlink allocated thereto or the reliability value indicates that the control signals are incapable of being received to estimate the channel using the partial channel estimation.

Abstract translation: 一种执行在全信道估计之间切换信道估计设置的方法，该全信道估计包括基于在当前子帧之前的预定数目的接收参考符号来估计信道，以及包括基于子信道估计的子信道估计信道 接收到的参考符号的预定数量。 该方法包括当紧接当前子帧之前的预定数量的连续子帧没有下行链路被分配并且可靠性值指示控制信号能够被可靠地接收时，将设置从全部改变为部分。 该方法还包括当当前子帧具有下行链路分配时将设置从部分改变为全部，或者可靠性值指示控制信号不能被接收以使用部分信道估计来估计信道。

公开(公告)号：US09356679B2

公开(公告)日：2016-05-31

申请号：US14551733

申请日：2014-11-24

Applicant: APPLE INC.

Inventor： Syed Aon Mujtaba ,  Xiaowen Wang ,  Tarik Tabet ,  Kee-Bong Song ,  Youngjae Kim ,  Yuchul Kim

IPC: H04B7/08 ,  H04W52/02 ,  H04B1/18

CPC classification number: H04B7/0814 ,  H04B7/0817 ,  H04B7/0871 ,  H04W52/0209 ,  Y02D70/1262 ,  Y02D70/444

Abstract: Apparatus and methods for implementing “intelligent” receive diversity management in e.g., a mobile device. In one implementation, the mobile device includes an LTE-enabled UE, and the intelligent diversity management includes selectively disabling receive diversity (RxD) in that device upon meeting a plurality of criteria including (i) a capacity criterion, and (ii) a connectivity criterion. In one variant, the capacity criterion includes ensuring that an achievable data rate associated with a single Rx (receive) chain is comparable to that with RxD.

Abstract translation: 在例如移动设备中实现“智能”接收分集管理的装置和方法。 在一个实现中，移动设备包括启用LTE的UE，并且智能分集管理包括在满足多个标准时选择性地禁用该设备中的接收分集（RxD），包括（i）容量标准，和（ii）连接 标准。 在一个变型中，容量标准包括确保与单个Rx（接收）链相关联的可实现的数据速率与RxD的数据速率相当。

公开(公告)号：US20160112181A1

公开(公告)日：2016-04-21

申请号：US14867089

申请日：2015-09-28

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Syed Aon Mujtaba

IPC: H04L5/16 ,  H04W76/04 ,  H04W72/04 ,  H04L1/18 ,  H04L5/00

CPC classification number: H04L1/1812 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1854 ,  H04L1/1896 ,  H04L5/0055 ,  H04L5/006 ,  H04L5/16 ,  H04W72/0413 ,  H04W72/042 ,  H04W76/28 ,  H04W88/08

Abstract: A user equipment (UE) implements improved communication methods which enable uplink (UL) transmissions consistent with an UL timeline. The UE may have a transmit duty cycle and may transmit acknowledge/negative acknowledge messages to a base station according to the transmit duty cycle. Additionally, the UE may be configured to determine signal-to-interference-plus noise ratio (SINR) between the UE and the base station and compare SINR to a threshold. The UE may transmit redundancy versions of data in consecutive sub-frames with a duty cycle of two transmissions per X+1 sub-frames if SINR is equal or above the threshold and redundancy versions using a duty cycle of one transmission per X sub-frames if SINR is below the threshold. Further, the UE may be configured to communicate a number of UL HARQ processes supported by the UE, receive first information in a first sub-frame, and send second information X sub-frames after the first sub-frame.

Abstract translation: 用户设备（UE）实现改进的通信方法，其使能与UL时间线一致的上行链路（UL）传输。 UE可以具有发射占空比，并且可以根据发射占空比向基站发送确认/否定确认消息。 另外，UE可以被配置为确定UE与基站之间的信号与干扰加噪声比（SINR），并将SINR与阈值进行比较。 如果SINR等于或高于阈值，则UE可以以每X + 1个子帧的两次传输的占空比在连续子帧中传输数据的冗余版本，并且使用每X个子帧的一个传输的占空比的冗余版本 如果SINR低于阈值。 此外，UE可以被配置为传送由UE支持的多个UL HARQ进程，在第一子帧中接收第一信息，并且在第一子帧之后发送第二信息X子帧。

公开(公告)号：US20160020983A1

公开(公告)日：2016-01-21

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: H04L12/26 ,  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.

Abstract translation: 加载3GPP网络的估计。 可以测量与3GPP网络的小区有关的一个或多个度量。 可以基于一个或多个度量来估计小区的加载。 度量可以包括在多层测量，估计或导出的度量，可能包括物理层，无线电链路控制层，无线电资源控制层或应用层度量中的一个或多个。

公开(公告)号：US20160014697A1

公开(公告)日：2016-01-14

申请号：US14326771

申请日：2014-07-09

Applicant: Apple Inc.

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

IPC: H04W52/02 ,  H04L25/00 ,  H04W72/04 ,  H04W76/04

CPC classification number: H04W52/0251 ,  H04L25/00 ,  H04W52/0258 ,  H04W72/042 ,  H04W76/28 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/26

Abstract: Providing a power-saving mode for control channel monitoring in discontinuous reception (DRX) scenarios. Upon waking from a sleep mode at the conclusion of a DRX off period, a baseband modem may transition to a low-power mode configured to receive and decode only a control channel, such as a physical downlink control channel (PDCCH). If the control channel indicates during a DRX on period that communication traffic will be transmitted to the baseband modem, then the baseband modem may transition to a full-power mode to receive the communication traffic. Otherwise, the baseband modem may transition back to the sleep mode. The low-power mode may be implemented by a dedicated set of hardware configured to draw less power than a full set of hardware configured to implement the high-power mode.

Abstract translation: 在不连续接收（DRX）场景中提供用于控制信道监视的省电模式。 在DRX关闭时段结束时，从睡眠模式唤醒时，基带调制解调器可以转换到被配置为仅接收和解码诸如物理下行链路控制信道（PDCCH）的控制信道的低功率模式。 如果控制信道在DRX开启期间指示通信业务将被发送到基带调制解调器，则基带调制解调器可以转换到全功率模式以接收通信业务。 否则，基带调制解调器可以转换回睡眠模式。 低功耗模式可以通过配置成比配置成实现高功率模式的全套硬件抽取更少功率的专用硬件组来实现。

公开(公告)号：US20150373774A1

公开(公告)日：2015-12-24

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

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.

Abstract translation: 结合在蜂窝语音呼叫期间连接的不连续接收（C-DRX）模式通信的端到端延迟适应。 可以在第一无线用户设备（UE）设备和第二UE之间建立LTE上的语音（VoLTE）呼叫。 可以估计第一UE的实时传输协议（RTP）层和用于VoLTE呼叫的第二UE之间的端到端延迟。 端到端延迟可以与一个或多个阈值相比较可以基于将端到端延迟与一个或多个阈值进行比较来修改VoLTE呼叫的C-DRX周期长度。

公开(公告)号：US20150365977A1

公开(公告)日：2015-12-17

申请号：US14729360

申请日：2015-06-03

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Youngjae Kim ,  Syed Aon Mujtaba

IPC: H04W74/08 ,  H04W72/04 ,  H04L1/18 ,  H04J13/00 ,  H04W52/34

CPC classification number: H04W74/0833 ,  H04J13/0062 ,  H04L1/189 ,  H04W52/34 ,  H04W72/0406 ,  H04W74/004 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/26

Abstract: Enhanced random access procedures for link-budget-limited user equipment (UE) devices are disclosed. A user equipment device may transmit a first message containing a Physical Random Access Channel (PRACH). The PRACH contains instances of a Zadoff-Chu sequence, and may be transmitted repeatedly as part of a single random attempt, to facilitate correlation data combining at the base station. The available Zadoff-Chu sequences may be partitioned among a plurality of sets, each set being associated with a respective Doppler shift range (or frequency hop pattern or time repetition pattern). A UE device may signal Doppler shift (or other information) to the base station by selection of one of the sets. The first PRACH transmission and the following PRACH transmission may occur in consecutive subframes. A UE device may select from a special set of Zadoff-Chu sequences (different from a conventional set of sequences), to signal its status as a link-budget-limited device.

Abstract translation: 公开了针对链路限制用户设备（UE）设备的增强的随机接入过程。 用户设备设备可以发送包含物理随机接入信道（PRACH）的第一消息。 PRACH包含Zadoff-Chu序列的实例，并且可以作为单个随机尝试的一部分被重复发送，以便于在基站处的相关数据组合。 可用的Zadoff-Chu序列可以在多个集合之间分割，每个集合与相应的多普勒频移范围（或频率跳跃模式或时间重复模式）相关联。 UE设备可以通过选择组中的一个来向基站发信号通知多普勒频移（或其他信息）。 第一PRACH传输和随后的PRACH传输可以在连续的子帧中发生。 UE设备可以从Zadoff-Chu序列的特定集合中选择（与传统的序列集不同），以将其作为链路预算有限的设备的状态发信号。

公开(公告)号：US09185587B2

公开(公告)日：2015-11-10

申请号：US13867584

申请日：2013-04-22

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Swaminathan Balakrishnan ,  Yuchul Kim ,  Navid Damji ,  Sreevalsan Vallath ,  Samy Khay-Ibbat ,  Syed Aon Mujtaba

IPC: H04W36/00 ,  H04W24/06 ,  H04W24/08

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.

Abstract translation: 加载3GPP网络的估计。 可以测量与3GPP网络的小区有关的一个或多个度量。 可以基于一个或多个度量来估计小区的加载。 度量可以包括在多层测量，估计或导出的度量，可能包括物理层，无线电链路控制层，无线电资源控制层或应用层度量中的一个或多个。

公开(公告)号：US20150257133A1

公开(公告)日：2015-09-10

申请号：US14630691

申请日：2015-02-25

Applicant: Apple Inc.

Inventor： Joonsuk Kim ,  Syed Aon Mujtaba

IPC: H04W72/04 ,  H04L27/22 ,  H04L29/06 ,  H04B7/04

CPC classification number: H04L69/22 ,  H04L1/0041 ,  H04L1/0075 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0224 ,  H04L27/22 ,  Y02D70/122 ,  Y02D70/124 ,  Y02D70/126

Abstract: A backward compatible L-LTF design that can provide control information in addition to channel estimation information in conjunction with Wi-Fi communication techniques. A wireless transmission may be received by a wireless device. The wireless transmission may include a physical layer (PHY) preamble and PHY data. The PHY preamble may include a field that has a training sequence configured for channel estimation and control information. The control information may be determined by the wireless device, and the wireless device may configure reception parameters for the wireless transmission based on the control information.

Abstract translation: 一种向后兼容的L-LTF设计，除了与Wi-Fi通信技术相结合的信道估计信息之外，还可提供控制信息。 无线设备可以接收无线传输。 无线传输可以包括物理层（PHY）前导码和PHY数据。 PHY前导码可以包括具有被配置用于信道估计和控制信息的训练序列的场。 控制信息可以由无线设备确定，并且无线设备可以基于控制信息来配置用于无线传输的接收参数。

公开(公告)号：US20150257106A1

公开(公告)日：2015-09-10

申请号：US14626947

申请日：2015-02-20

Applicant: Apple Inc.

Inventor： Syed Aon Mujtaba ,  Joonsuk Kim

IPC: H04W52/02 ,  H04W28/02

CPC classification number: H04W52/0238 ,  H04W28/0221 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/26

Abstract: This disclosure relates to low energy communication techniques. According to some embodiments, a wireless transmission may be received by a wireless device. The wireless transmission may include a physical layer (PHY) preamble and PHY data. The PHY preamble may include destination information indicating a destination and length information indicating a length (or duration) of the wireless transmission. The destination and length information may be included prior to a portion of the PHY preamble configured for channel estimation. The wireless device may determine whether the wireless transmission is destined to the wireless device based on the destination information. If the wireless transmission is not destined to the wireless device, the wireless device may drop a remainder of the wireless transmission.

Abstract translation: 本公开涉及低能量通信技术。 根据一些实施例，无线设备可以接收无线传输。 无线传输可以包括物理层（PHY）前导码和PHY数据。 PHY前导码可以包括指示目的地的目的地信息和指示无线传输的长度（或持续时间）的长度信息。 目的地和长度信息可以被包括在配置用于信道估计的PHY前同步码之前。 无线设备可以基于目的地信息来确定无线传输是否去往无线设备。 如果无线传输不指向无线设备，则无线设备可以丢弃无线传输的剩余部分。