公开(公告)号：US20140192669A1

公开(公告)日：2014-07-10

申请号：US14152739

申请日：2014-01-10

Applicant: Apple Inc.

Inventor： Xiaowen Wang ,  Vinay R. Majjigi ,  Syed A. Mujtaba ,  Christopher J. Hansen

IPC: H04W24/00

CPC classification number: H04B17/318 ,  H04B17/26 ,  H04W48/16

Abstract: A station (STA) can receive messages (e.g., beacon frames) at a regular interval, and perform measurements on the received messages. The STA maintains a running average of recent measurement values, and updates the running average after each new measurement interval. At some measurement opportunities, the expected messages cannot be received by the STA, and so the STA cannot perform a measurement; when this occurs, the STA can choose substitute values to use for the missed measurements when next calculating the running average. As one example, the STA can substitute the value for a previously-performed measurement for the missed measurements. As another example, the STA can substitute a predetermined low value for the missed measurements. Based on the value of the running average at a given point in time, the STA can take actions such as initiating a roaming scan or switching to a different wireless interface.

Abstract translation: 站（STA）可以以规则的间隔接收消息（例如，信标帧），并对所接收的消息执行测量。 STA保持最近测量值的运行平均值，并在每个新的测量间隔之后更新运行平均值。 在某些测量机会中，STA不能接收预期的消息，因此STA不能执行测量; 当发生这种情况时，STA可以选择替代值，用于下次计算运行平均值时的错过测量。 作为一个示例，STA可以将该值替换为先前执行的测量用于错过测量。 作为另一示例，STA可以将预定的低值替换为错过的测量。 基于给定时间点的运行平均值，STA可以采取行动，例如启动漫游扫描或切换到不同的无线接口。

公开(公告)号：US20140073258A1

公开(公告)日：2014-03-13

申请号：US14011948

申请日：2013-08-28

Applicant: Apple Inc.

Inventor： William Burchill ,  Syed A. Mujtaba

IPC: H04B1/12

CPC classification number: H04B1/12 ,  H04B1/123

Abstract: Adaptive cancellation of out-of-band interference between coexisting wireless communication devices. A signal including out-of-band noise may be received by a victim communication device and by an adaptive cancellation device. The adaptive cancellation device may use an adaptive filter to isolate a representation of the out-of-band noise. The adaptive cancellation device may then subtract the noise from the receive path of the victim communication device. The victim device and the adaptive cancellation device need not be located on the same chip as an aggressor device generating the out-of-band noise.

Abstract translation: 共存无线通信设备之间的带外干扰的自适应消除。 包括带外噪声的信号可以由受害者通信设备和自适应消除设备接收。 自适应消除装置可以使用自适应滤波器来隔离带外噪声的表示。 然后，自适应消除装置可以从受害者通信装置的接收路径中减去噪声。 受害者设备和自适应消除设备不需要位于与产生带外噪声的侵略器设备相同的芯片上。

公开(公告)号：US20130331137A1

公开(公告)日：2013-12-12

申请号：US13969268

申请日：2013-08-16

Applicant: Apple Inc.

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

IPC: H04W52/24

CPC classification number: H04W52/243 ,  H04B15/00 ,  H04L1/0002 ,  H04L1/20 ,  H04W16/14 ,  H04W72/082 ,  H04W76/16 ,  H04W88/06

Abstract: Methods and apparatus to mitigate interference among multiple wireless subsystems of a wireless communication device are described. A host processor obtains configurations for a plurality of wireless subsystems and evaluates whether potential or actual coexistence interference exists between two or more of the wireless subsystems. The host processor provides configuration information and link quality reporting parameters to and obtains link quality reports from at least two wireless subsystems. When link quality for at least one wireless subsystem fails a set of link quality conditions, the host processor adjusts data requirements for applications that communicate through one or more of the wireless subsystems and/or adjusts radio frequency operating conditions for one or more of the wireless subsystems to mitigate interference among the wireless subsystems.

Abstract translation: 描述了用于减轻无线通信设备的多个无线子系统之间的干扰的方法和装置。 主机处理器获得多个无线子系统的配置，并评估在两个或多个无线子系统之间是否存在潜在的或实际的共存干扰。 主机处理器向至少两个无线子系统提供配置信息和链路质量报告参数并从其获得链路质量报告。 当至少一个无线子系统的链路质量失败一组链路质量状况时，主处理器调整通过一个或多个无线子系统进行通信的应用的数据要求和/或调整无线一个或多个的无线电频率操作条件 子系统，以减轻无线子系统之间的干扰。

公开(公告)号：US20130324145A1

公开(公告)日：2013-12-05

申请号：US13896202

申请日：2013-05-16

Applicant: APPLE INC.

Inventor： Tarik Tabet ,  Kee-Bong Song ,  Syed A. Mujtaba ,  Young Jae Kim ,  Navid Damji

IPC: H04W72/08

CPC classification number: H04W72/085 ,  H04B7/0417 ,  H04B17/21 ,  H04B17/24 ,  H04L1/0026 ,  H04L1/0027 ,  H04L27/0008 ,  H04L27/2601 ,  H04W76/19

Abstract: Methods, apparatuses and computer readable media are described that adjust signaling messages that include channel quality metrics communicated between a mobile wireless device and a wireless access network before and/or after interruption of a connection to improve downlink performance after resumption of the connection. One or more adjusted channel quality metrics are determined and communicated to the wireless access network to compensate at least in part for an estimate of communication channel performance degradation by a network element of the wireless access network following the interruption and resumption of the connection between the mobile wireless device and the wireless access network.

Abstract translation: 描述了调整信号消息的方法，装置和计算机可读介质，该信令消息包括在连接中断之前和/或之后在移动无线设备与无线接入网之间通信的信道质量度量，以在恢​​复连接之后改善下行链路性能。 确定一个或多个经调整的信道质量度量并将其传送到无线接入网络，以至少部分地补偿在移动台之间的连接中断和恢复之后无线接入网络的网络元件的通信信道性能退化的估计 无线设备和无线接入网络。