公开(公告)号：US20130303089A1

公开(公告)日：2013-11-14

申请号：US13651823

申请日：2012-10-15

Applicant: APPLE INC.

Inventor： Xiaowen Wang ,  Weiping Dou ,  Warren Lee ,  Zhaojun Cheng ,  Syed Aon Mujtaba

IPC: H04W24/00

CPC classification number: H04W24/06 ,  H04W88/02

Abstract: A system and method for wireless device testing. The system includes a reverberation chamber (RC) and a downlink channel emulator. A wireless device is placed within the RC. Probe antennas are positioned within the RC. The downlink (DL) channel emulator couples to the probe antennas. The DL channel emulator is configured to: (a) receive downlink stimulus signals; and (b) generate downlink intermediate signals based on the downlink stimulus signals in order to emulate desired downlink channel characteristics. The probe antennas are configured to respectively transmit the downlink intermediate signals into the RC for reception by the wireless device. The system may also include an uplink channel emulator, which receives uplink transmit signals from the RC, and generates uplink terminal signals based on the uplink transmit signals in order to emulate desired uplink channel characteristics. The uplink transmit signals may be used to evaluated the performance of the wireless device.

Abstract translation: 一种用于无线设备测试的系统和方法。 该系统包括混响室（RC）和下行链路信道仿真器。 无线设备放置在RC内。 探头天线位于RC内。 下行链路（DL）信道仿真器耦合到探测天线。 DL通道仿真器被配置为：（a）接收下行链路刺激信号; 并且（b）基于下行链路刺激信号生成下行链路中间信号，以便模拟期望的下行链路信道特性。 探测天线被配置为分别将下行链路中间信号发送到RC以供无线设备接收。 该系统还可以包括上行链路信道仿真器，其从RC接收上行链路发送信号，并且基于上行链路发送信号生成上行链路终端信号，以便模拟期望的上行链路信道特性。 上行链路传输信号可以用于评估无线设备的性能。

公开(公告)号：US20220394527A1

公开(公告)日：2022-12-08

申请号：US17437797

申请日：2021-06-07

Applicant: Apple Inc.

Inventor： Udar Mittal ,  Xiaowen Wang ,  Haitong Sun ,  Yushu Zhang ,  Wei Zeng ,  Theodoros Kamakaris ,  Joseph Hakim

IPC: H04W24/10 ,  H04W76/14 ,  H04W72/08

Abstract: This disclosure relates to techniques for coordinated channel state information reporting in a wireless communication system. A wireless device may establish a wireless link with a cellular base station. The wireless device may determine to coordinate channel state information reporting with another wireless device. Information may be exchanged with the other wireless device via a sidelink wireless link. The wireless device may provide channel state information to the cellular base station. The channel state information may be determined based at least in part on the information exchanged with the other wireless device via the sidelink wireless link.

公开(公告)号：US10924993B2

公开(公告)日：2021-02-16

申请号：US16109985

申请日：2018-08-23

Applicant: Apple Inc.

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

IPC: H04W52/02 ,  H04W28/06 ,  H04W88/08 ,  H04W84/12

Abstract: An interface circuit in an electronic device (such as an access point) may utilize a configurable wake-up-frame format. During operation, the interface circuit may receive a wake-up-radio (WUR)-setup request associated with a recipient electronic device, where the WUR-setup request specifies a proposed configurable wake-up-frame format. In response, the electronic device may determine the configurable wake-up-frame format to be used based at least in part on the proposed configurable wake-up-frame format. Then, the interface circuit may provide a WUR-setup response intended for the recipient electronic device, where the WUR-setup response specifies the configurable wake-up-frame format selected for use. Note that the configurable wake-up-frame format may specify a payload length in a wake-up frame and/or one or more operations of at least one of the recipient electronic device or the electronic device after the wake-up frame is transmitted by the electronic device.

公开(公告)号：US20180309471A1

公开(公告)日：2018-10-25

申请号：US16022288

申请日：2018-06-28

Applicant: Apple Inc.

Inventor： Xiaowen Wang ,  Syed Aon Mujtaba ,  Vinay R. Majjigi ,  Joonsuk Kim

IPC: H04B1/40 ,  H04B7/08 ,  H04B7/06 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04B1/40 ,  H04B7/061 ,  H04B7/0817 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/10

Abstract: Wireless communication devices (UEs) may include multiple receive (RX) chains and associated antennas, and at least one transmit (TX) chain co-located with one of the RX chains. The UE may track instant fading of the antenna gain(s) during reception of packets from an associated access point (AP) device to which the UE intends to transmit packets. The UE may also track long term antenna gain(s), using any packets received at the multiple RX chains within the UE. At a switching occasion, a decision is made by the UE whether to switch antennas. If the instant fading detection is based on packets received no later than a specified time period prior to the switching occasion, then the UE may make the switching decision based on the results of the instant fading tracking. Otherwise, the UE may make the switching decision based on the results of the long term antenna gain tracking.

公开(公告)号：US20180159570A1

公开(公告)日：2018-06-07

申请号：US15830502

申请日：2017-12-04

Applicant: Apple Inc.

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

IPC: H04B1/10 ,  H04W88/06 ,  H04L12/851 ,  H04L12/891 ,  H04W52/26 ,  H04L12/825 ,  H04W72/04 ,  H04W28/02 ,  H04W52/36 ,  H04L12/801 ,  H04B17/29 ,  H04W52/24

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.

公开(公告)号：US09596637B2

公开(公告)日：2017-03-14

申请号：US13855600

申请日：2013-04-02

Applicant: Apple Inc.

Inventor： Christopher J. Hansen ,  Kee-Bong Song ,  Syed A. Mujtaba ,  Vinay R. Majjigi ,  Xiaowen Wang

IPC: H04W36/30 ,  H04W76/02

CPC classification number: H04W36/30 ,  H04W76/15

Abstract: In order to facilitate communication between an electronic device and another electronic device, the electronic device determines communication-quality metrics for a first connection in a wireless network based on received information from the other electronic device. Then, the electronic device calculates an overall communication-quality indicator for the first connection based on at least some of the communication-quality metrics. Moreover, the electronic device dynamically adapts the communication with the other electronic device based on the overall communication-quality indicator. For example, the electronic device may establish a second connection in a cellular-telephone network and may use the second connection to communicate with the other electronic device. Alternatively, the electronic device may provide the overall communication-quality indicator to the other electronic device and may at least partially transition the communication from the second connection in the cellular-telephone network to the first connection in the wireless network.

Abstract translation: 为了促进电子设备与另一电子设备之间的通信，电子设备基于来自另一电子设备的接收信息来确定无线网络中的第一连接的通信质量度量。 然后，电子设备基于至少一些通信质量度量来计算用于第一连接的整体通信质量指示符。 此外，电子设备基于总体通信质量指示符动态地适应与另一电子设备的通信。 例如，电子设备可以在蜂窝电话网络中建立第二连接，并且可以使用第二连接来与另一个电子设备进行通信。 或者，电子设备可以将整体通信质量指示符提供给另一电子设备，并且可以至少部分地将通信从蜂窝电话网络中的第二连接转移到无线网络中的第一连接。

公开(公告)号：US09549337B2

公开(公告)日：2017-01-17

申请号：US14501870

申请日：2014-09-30

Applicant: Apple Inc.

Inventor： Xiaowen Wang ,  Ajoy K. Singh ,  Wen Zhao ,  Shu Du ,  Kapil Chhabra ,  Rudy E. Rawlins

IPC: H04W48/18 ,  H04W76/00 ,  H04W40/12 ,  H04W40/16 ,  H04W28/02 ,  H04W36/22 ,  H04W36/20 ,  H04W36/12 ,  H04W84/12 ,  H04W36/30 ,  H04W36/00 ,  H04W76/02 ,  H04W36/14

CPC classification number: H04W28/0236 ,  H04W36/0022 ,  H04W36/14 ,  H04W36/20 ,  H04W36/30 ,  H04W40/12 ,  H04W40/16 ,  H04W48/18 ,  H04W76/10 ,  H04W84/12

Abstract: In order to improve the quality of a telephone call communicated over a wireless local area network (WLAN), an electronic device (such as a cellular telephone) may obtain one or more performance metrics based on communication with another electronic device (such as an access point) via a connection in the WLAN. For example, the electronic device may receive the one or more performance metrics from the other electronic device and/or may determine the one or more performance metrics based on the performance of the communication. Then, the electronic device may compare the one or more performance metrics with an interference criterion. If the interference criterion is met, the electronic device may perform a remedial action, such as selectively discontinuing use of the WLAN to communicate the telephone call for a time interval. Otherwise, the electronic device may continue using the WLAN to communicate the telephone call.

Abstract translation: 为了提高通过无线局域网（WLAN）传送的电话呼叫的质量，电子设备（诸如蜂窝电话）可以基于与另一电子设备（例如接入点）的通信获得一个或多个性能度量 点）通过WLAN中的连接。 例如，电子设备可以从其他电子设备接收一个或多个性能度量，和/或可以基于通信的性能来确定一个或多个性能度量。 然后，电子设备可以将一个或多个性能度量与干扰标准进行比较。 如果满足干扰标准，则电子设备可以执行补救动作，例如选择性地中断WLAN的使用以在一段时间间隔内传送电话呼叫。 否则，电子设备可以继续使用WLAN来通信电话呼叫。

公开(公告)号：US09386488B2

公开(公告)日：2016-07-05

申请号：US14954626

申请日：2015-11-30

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Syed A. Mujtaba ,  Xiaowen Wang ,  Paul Flynn ,  Kee-Bong Song ,  Vinay Majjigi ,  Youngjae Kim ,  Yuchul Kim ,  Christian Mucke

IPC: H04W36/00 ,  H04W88/06 ,  H04W76/04

CPC classification number: H04W36/0066 ,  H04W36/0088 ,  H04W76/28 ,  H04W88/06

Abstract: Managing radio resources across dual networks includes a wireless mobile device connecting to a first wireless network using a first radio access technology. The wireless device may notify the first network of a capability to be temporarily non-responsive to the first network while maintaining a signaling connection to the first network. The wireless device may communicate with a second network. The wireless device may return to communicating with the first network subsequent to communicating with the second network, and in response to communicating with the second network for less than a predetermined amount of time, the wireless device may send a scheduling request to the first network. In response to receiving a grant acknowledgement from the first network, the wireless device may send a buffer status report that includes a value such as zero to indicate that the wireless device has returned to and can communicate with the first network.

公开(公告)号：US20160157270A1

公开(公告)日：2016-06-02

申请号：US14954626

申请日：2015-11-30

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Syed A. Mujtaba ,  Xiaowen Wang ,  Paul Flynn ,  Kee-Bong Song ,  Vinay Majjigi ,  Youngjae Kim ,  Yuchul Kim ,  Christian Mucke

IPC: H04W74/08 ,  H04W36/00 ,  H04W72/12

CPC classification number: H04W36/0066 ,  H04W36/0088 ,  H04W76/28 ,  H04W88/06

Abstract: Managing radio resources across dual networks includes a wireless mobile device connecting to a first wireless network using a first radio access technology. The wireless device may notify the first network of a capability to be temporarily non-responsive to the first network while maintaining a signaling connection to the first network. The wireless device may communicate with a second network. The wireless device may return to communicating with the first network subsequent to communicating with the second network, and in response to communicating with the second network for less than a predetermined amount of time, the wireless device may send a scheduling request to the first network. In response to receiving a grant acknowledgement from the first network, the wireless device may send a buffer status report that includes a value such as zero to indicate that the wireless device has returned to and can communicate with the first network.

公开(公告)号：US09319934B2

公开(公告)日：2016-04-19

申请号：US14472442

申请日：2014-08-29

Applicant: Apple Inc.

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

IPC: H04W28/04 ,  H04L1/00 ,  H04W52/24 ,  H04W52/14

CPC classification number: H04W28/048 ,  H04L1/0045 ,  H04L1/0047 ,  H04L1/0053 ,  H04W28/04 ,  H04W52/143 ,  H04W52/241

Abstract: A user device receives packets from a base station. The user device may invoke decoding while the packet is still being received, based on the incomplete contents of a given packet. This “partial packet decoding” relies on the fact that the underlying information in the packet is encoded with redundancy (code rate less than one). If link quality is poor, the partial packet decoding is likely to be unsuccessful, i.e., to fail in its attempt to recover the underlying information. To avoid waste of power, the user device may be configured to apply one or more tests of link quality prior to invoking the partial packet decoding on a current packet.

Abstract translation: 用户设备从基站接收分组。 基于给定分组的不完整内容，用户设备可以在分组仍在接收时调用解码。 这种“部分分组解码”依赖于以冗余（代码率小于1）对分组中的底层信息进行编码的事实。 如果链路质量差，则部分分组解码可能不成功，即在尝试恢复基础信息时失败。 为了避免浪费电力，用户设备可以被配置为在对当前分组调用部分分组解码之前应用一个或多个链路质量测试。