公开(公告)号：US09197166B2

公开(公告)日：2015-11-24

申请号：US13628014

申请日：2012-09-26

Applicant: Apple Inc.

Inventor： Vinay R. Majjigi ,  William S. Burchill ,  Xiaowen Wang

IPC: H04W52/02 ,  H04W52/24 ,  H04W52/28 ,  H03F1/02 ,  H04W52/52 ,  H03F1/32 ,  H03F3/195 ,  H03F3/24

CPC classification number: H03F1/0261 ,  H03F1/3205 ,  H03F3/195 ,  H03F3/245 ,  H04W52/52

Abstract: A method of increasing power amplifier linearity to facilitate in-device coexistence between wireless communication technologies is provided. The method can include determining a scheduled time period during which data is received by a device via a first wireless communication technology. The method can further include adjusting an operational parameter of a power amplifier applied to a transmission from the device via a second wireless communication technology to increase a linearity of the power amplifier during the scheduled time period.

Abstract translation: 提供了增加功率放大器线性度以促进无线通信技术之间的设备内共存的方法。 该方法可以包括确定由设备经由第一无线通信技术接收数据的调度时间段。 该方法还可以包括：经由第二无线通信技术调整应用于来自设备的传输的功率放大器的操作参数，以在预定的时间段内增加功率放大器的线性度。

公开(公告)号：US09049747B2

公开(公告)日：2015-06-02

申请号：US13909298

申请日：2013-06-04

Applicant: Apple Inc.

Inventor： Wen Zhao ,  Paul V. Flynn ,  William S. Burchill ,  Vinay R. Majjigi ,  Xiaowen Wang ,  Syed A. Mujtaba ,  Kee-Bong Song

IPC: H04B1/00 ,  H04B15/00 ,  H04W88/06

CPC classification number: H04B1/1081 ,  H04B17/29 ,  H04L47/14 ,  H04L47/24 ,  H04L47/25 ,  H04L47/41 ,  H04W28/0236 ,  H04W52/243 ,  H04W52/265 ,  H04W52/267 ,  H04W52/36 ,  H04W72/0413 ,  H04W88/06

Abstract: A method for facilitating in-device coexistence between wireless communication technologies on a wireless communication device is provided. The method can include transmitting data traffic from the wireless communication device via an aggressor wireless communication technology; determining occurrence of an in-device interference condition resulting from transmission of the data traffic via the aggressor wireless communication technology interfering with concurrent data reception by the wireless communication device via a victim wireless communication technology; and reducing a bit rate of the data traffic transmitted via the aggressor wireless communication technology in response to the in-device interference condition.

Abstract translation: 提供了一种用于促进无线通信设备上的无线通信技术之间的设备内共存的方法。 该方法可以包括经由侵略者无线通信技术从无线通信设备发送数据业务; 确定由干扰由无线通信设备经受害无线通信技术的并发数据接收的侵扰者无线通信技术的数据业务的传输导致的设备内干扰条件的发生; 并且响应于设备内干扰条件，降低通过侵入者无线通信技术传输的数据业务的比特率。

公开(公告)号：US20150079917A1

公开(公告)日：2015-03-19

申请号：US14551733

申请日：2014-11-24

Applicant: Apple Inc.

Inventor： Syed Aon MUJTABA ,  Xiaowen Wang ,  Tarik Tabet ,  Kee-Bont Song ,  Youngjae Kim ,  Yuchul Kim

IPC: H04B7/08

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：US20150071142A1

公开(公告)日：2015-03-12

申请号：US14138659

申请日：2013-12-23

Applicant: Apple Inc.

Inventor： Joonsuk Kim ,  Syed A. Mujtaba ,  Xiaowen Wang

IPC: H04W52/02

CPC classification number: H04W52/0238 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144

Abstract: In order to reduce power consumption of an electronic device during communication with another electronic device in a wireless local area network (WEAN), the electronic device analyzes fields in a given packet prior to a payload of the given packet to look for information that specifies a destination of the given packet. For example, the information may include: a full associated identification (AID) of the destination, a partial media-access-control (MAC) address of the destination; and/or a compressed (MAC) address of the destination. The information may be included in the preamble of the given packet. In particular, the information may replace length information in a high-throughput signal field in the given packet. Moreover, if the destination is other than the electronic device, the electronic device dumps the given packet and changes a power state of the electronic device, thereby reducing the power consumption.

Abstract translation: 为了在与无线局域网（WEAN）中的另一电子设备通信期间减少电子设备的功耗，电子设备在给定分组的有效载荷之前分析给定分组中的字段，以查找指定 给定包的目的地。 例如，信息可以包括：目的地的完全相关联的标识（AID），目的地的部分媒体访问控制（MAC）地址; 和/或目的地的压缩（MAC）地址。 信息可以被包括在给定分组的前导码中。 具体地，该信息可以替代给定分组中的高吞吐量信号字段中的长度信息。 此外，如果目的地不是电子设备，则电子设备转储给定分组并改变电子设备的功率状态，从而降低功耗。

公开(公告)号：US20150023284A1

公开(公告)日：2015-01-22

申请号：US14444818

申请日：2014-07-28

Applicant: Apple Inc.

Inventor： Wen Zhao ,  Syed A. Mujtaba ,  Xiaowen Wang ,  Vinay R. Majjigi ,  Isabel G. Mahe

IPC: H04W72/04 ,  H04L5/00 ,  H04W88/06

CPC classification number: H04W72/048 ,  H04L5/0092 ,  H04W68/12 ,  H04W72/00 ,  H04W72/04 ,  H04W88/06

Abstract: A single chip mobile wireless device capable of receiving and transmitting over one wireless network at a time maintains registration on two wireless communication networks that each use different communication protocols in parallel. Periodically, the mobile wireless device tunes one or more receivers from a first wireless network to a second wireless network in order to listen for paging messages addressed to the mobile wireless device from the second wireless network. The first wireless network suspends allocation of radio resources to the mobile wireless device based on receipt of a suspension message from the mobile wireless device, or based on knowledge of a paging cycle for mobile wireless device in the second wireless network, or based on detection of an out of synchronization condition with the mobile wireless device.

Abstract translation: 一次能够通过一个无线网络接收和发送的单芯片移动无线设备在两个并行地使用不同通信协议的无线通信网络上保持注册。 周期性地，移动无线设备将一个或多个接收器从第一无线网络调谐到第二无线网络，以便从第二无线网络监听寻址到移动无线设备的寻呼消息。 第一无线网络基于接收到来自移动无线设备的暂停消息，或者基于第二无线网络中针对移动无线设备的寻呼周期的知识，或基于对第二无线设备的检测 与移动无线设备不同步的情况。

公开(公告)号：US20140073371A1

公开(公告)日：2014-03-13

申请号：US14082093

申请日：2013-11-15

Applicant: Apple Inc.

Inventor： Syed Aon Mujtaba ,  Wen Zhao ,  Xiaowen Wang ,  Vinay Majjigi ,  Isabel G. Mahe

IPC: H04W24/00

CPC classification number: H04W24/08 ,  H04B1/26 ,  H04B7/0602 ,  H04B7/0802 ,  H04W24/00 ,  H04W68/00 ,  H04W88/06 ,  H04W88/10

Abstract: Electronic devices may be provided that contain wireless communication circuitry. The wireless communication circuitry may include radio-frequency transceiver circuitry coupled to antennas by switching circuitry. Multiple radio access technologies may be supported. A device may include first and second antennas. Control circuitry can configure the transceiver circuitry and switching circuitry to support operation of the device in active and idle modes for each radio access technology. In some configurations, both antennas may be used to support operations associated with one of the radio access technologies. In other configurations, the first antenna may be used to support operations with a first of the radio access technologies while the second antenna is used to support operations with a second of the radio access technologies.

Abstract translation: 可以提供包含无线通信电路的电子设备。 无线通信电路可以包括通过开关电路耦合到天线的射频收发器电路。 可以支持多种无线电接入技术。 设备可以包括第一和第二天线。 控制电路可以配置收发器电路和开关电路，以支持每个无线电接入技术在主动和空闲模式下的设备操作。 在一些配置中，两个天线可以用于支持与无线电接入技术之一相关联的操作。 在其他配置中，第一天线可以用于支持具有第一无线电接入技术的操作，而第二天线用于支持具有第二无线电接入技术的操作。

公开(公告)号：US10462792B2

公开(公告)日：2019-10-29

申请号：US15165424

申请日：2016-05-26

Applicant: APPLE INC.

Inventor： Xiaowen Wang ,  William Burchill ,  Dawei Zhang

IPC: H04W72/04 ,  H04B7/0413 ,  H04W4/02

Abstract: A method and a device for performing massive multiple-input and multiple-output (“MIMO”) operations with a user equipment (UE). The method and device receive signals from a UE within a coverage area of the device, determine a location of the UE within the coverage area and assign an operating frequency band to the UE for communication with the device, wherein the coverage area includes a plurality of regions and the operating frequency band assigned to the UE is based on the one of the regions corresponding to the location and transmit the operating frequency band assignment to the UE.

公开(公告)号：US10345435B2

公开(公告)日：2019-07-09

申请号：US16041874

申请日：2018-07-23

Applicant: Apple Inc.

Inventor： Syed Aon Mujtaba ,  Xiaowen Wang

IPC: H04W24/00 ,  G01S7/486 ,  H04W4/02 ,  H04L27/18 ,  G01S11/02 ,  G01S11/08 ,  H04L27/00 ,  H04L27/26 ,  G01S5/14 ,  G01S17/10 ,  H04L1/00 ,  H04L27/34 ,  H04W64/00

Abstract: Some embodiments relate to a waveform design for time-of-flight estimation in a wireless communication system. The waveform may include a number N of signal tones, wherein the number N of signal tones is greater than a number M of signal tones that the receiving wireless device is configured to decode. Upon receipt of the waveform, the receiving wireless device may store a timestamp which indicates a time of receipt of the waveform. The receiving wireless device may decode M of the N signal tones. For example, the receiving wireless device may decode the middle M signal tones of the N signal tones. One or more of the transmitting or receiving wireless devices may then estimate a distance between them based at least in part on the timestamp.

公开(公告)号：US20190007823A1

公开(公告)日：2019-01-03

申请号：US16125799

申请日：2018-09-10

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Xiaowen Wang ,  Tarik Tabet ,  Dawei Zhang ,  Syed Aon Mujtaba

IPC: H04W8/00 ,  H04W52/02 ,  H04W76/14

CPC classification number: H04W8/005 ,  H04W52/0241 ,  H04W76/14 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/26

Abstract: In some embodiments, a user equipment device (UE) implements a method for discovering the presence of neighboring UEs using an on-demand discovery signal transmission technique. This discovery process may be performed to enable the UEs to perform peer-to-peer communications with each other, wherein peer-to-peer communications is defined as direct communication between the UEs without involving a base station. The UE may be configured to transmit a discovery request signal when it has moved greater than a threshold amount since transmission of a prior discovery request signal. The discovery request signal causes one or more neighboring UEs to each transmit a discovery signal in response, and also causes the UE which generated the discovery request signal to transmit its own discovery signal. The received discovery signal from each of the neighboring UEs is useable to discover, or detect the presence of, these neighboring UEs.

公开(公告)号：US20180359704A1

公开(公告)日：2018-12-13

申请号：US15997497

申请日：2018-06-04

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Yong Liu ,  Oren Shani ,  Xiaowen Wang ,  Christiaan A. Hartman ,  Matthew L. Semersky ,  Josef Peery ,  Yoel Boger ,  Tushar R. Shah ,  Rajneesh Kumar ,  Christian W. Mucke

IPC: H04W52/02

CPC classification number: H04W52/0219 ,  H04W4/06 ,  H04W52/0235 ,  H04W76/40 ,  H04W84/12

Abstract: An interface circuit in an electronic device (such as an access point) may provide a group wake-up packet to a group of recipient electronic devices in a set of recipient electronic devices. During operation, the interface circuit may select the group in the set of recipient electronic devices, where the group includes at least one of the recipient electronic devices. Then, the interface circuit may provide the group wake-up packet for the recipient electronic devices in the group with information that specifies that a subset of the recipient electronic devices in the group transition from a low-power mode. For example, the information may include a bitmap that specifies the subset and an identifier of the group. Note that the electronic device may dynamically define the group. Alternatively, the recipient electronic devices in the group may be static.