Wi-Fi adaptive transmit antenna selection

    公开(公告)号:US10014900B2

    公开(公告)日:2018-07-03

    申请号:US15707246

    申请日:2017-09-18

    Applicant: Apple Inc.

    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.

    Arbitrator for multi-radio antenna switching

    公开(公告)号:US09853681B2

    公开(公告)日:2017-12-26

    申请号:US14870119

    申请日:2015-09-30

    Applicant: Apple Inc.

    CPC classification number: H04B1/44 H04B7/0602 H04B7/0802 H04W84/12 H04W88/06

    Abstract: A user equipment device (UE) may be configured to collect first performance information from antennas of a first plurality of antennas. The first plurality of antennas may be coupled to a first radio of the UE that may be configured to perform wireless communications according to a first RAT. The UE may determine, based on at least the first performance information, a highest performing antenna of the first plurality of antennas to use for communications according to the first RAT. Additionally, the UE may determine, also based on at least the first performance information, a first antenna of a second plurality of antennas to use for communications according to a second RAT. The second plurality of antennas may be coupled to a second radio of the UE that may be configured to perform wireless communications according to the second RAT.

    Method and apparatus for flushing uplink HARQ buffer in C-DRX mode
    65.
    发明授权
    Method and apparatus for flushing uplink HARQ buffer in C-DRX mode 有权
    用于在C-DRX模式下刷新上行HARQ缓冲器的方法和装置

    公开(公告)号:US09564997B2

    公开(公告)日:2017-02-07

    申请号:US14453408

    申请日:2014-08-06

    Applicant: APPLE INC.

    Abstract: A method for determining whether an acknowledgement received by a user equipment from an external device is a forced acknowledgement. The method including transmitting a set of data stored in an uplink buffer to an external device, receiving an acknowledgement from the external device, determining if the acknowledgement received from the external device was a forced acknowledgement and flushing out an uplink buffer if determined that the acknowledgement was not a forced acknowledgement. The determining the acknowledgement is a forced acknowledgment being based on whether an uplink retransmission collides with one or more scheduled transmission times, a Physical Hybrid-ARQ Indicator Channel (PHICH) falls between gap measurements and an uplink retransmission collides with one of the gap measurements or a TTI bundling retransmission collides with a gap measurement. If the acknowledgement is not a forced acknowledgment, a set of data stored in the uplink buffer is retransmitted to the external device.

    Abstract translation: 一种用于确定用户设备从外部设备接收到的确认是否是强制确认的方法。 该方法包括将存储在上行链路缓冲器中的一组数据发送到外部设备,从外部设备接收确认,确定从外部设备接收到的确认是否是强制确认,并且如果确定确认 不是强制确认。 确定确认是基于上行链路重传是否与一个或多个调度的传输时间相冲突的强制确认,物理混合ARQ指示符信道(PHICH)落在间隙测量之间,并且上行链路重传与间隙测量之一相冲突, TTI捆绑重传与间隙测量相冲突。 如果确认不是强制确认,则将存储在上行链路缓冲器中的一组数据重新发送到外部设备。

    Control signaling optimization for LTE communications
    66.
    发明授权
    Control signaling optimization for LTE communications 有权
    LTE通信控制信令优化

    公开(公告)号:US09445429B2

    公开(公告)日:2016-09-13

    申请号:US14502507

    申请日:2014-09-30

    Applicant: Apple Inc.

    Abstract: The disclosure describes procedures for including downlink control information (DCI) within a physical downlink shared channel (PDSCH) communication to reduce power consumption for a user equipment (UE) operating in a Long Term Evolution (LTE) network. A network apparatus can be configured to identify an expected DCI change for the UE, determine whether an LTE subframe location for the DCI change is known, generate either a general or a specific DCI change indicator, and send the corresponding DCI change indicator to the UE on the PDSCH. The specific DCI change indicator can include a bitmap identifying a particular upcoming LTE subframe where the UE is required to decode the PDCCH for DCI, and the general DCI change indicator can include a bit flag identifying a time associated with one or more upcoming LTE subframes when the UE should decode the PDCCH for DCI.

    Abstract translation: 本公开描述了在物理下行链路共享信道(PDSCH)通信中包括下行链路控制信息(DCI)以减少在长期演进(LTE)网络中操作的用户设备(UE)的功耗的过程。 网络设备可以被配置为识别UE的预期DCI改变,确定用于DCI改变的LTE子帧位置是否已知,生成一般或特定DCI改变指示符,并将相应的DCI改变指示符发送给UE 在PDSCH上。 特定DCI变化指示符可以包括标识UE需要解码DCI的PDCCH的特定即将到来的LTE子帧的位图,并且一般的DCI变化指示符可以包括标识与一个或多个即将到来的LTE子帧相关联的时间的位标志, UE应对DCI的PDCCH进行解码。

    Wi-Fi Adaptive Receiver Diversity
    67.
    发明申请
    Wi-Fi Adaptive Receiver Diversity 有权
    Wi-Fi自适应接收机多样性

    公开(公告)号:US20160127028A1

    公开(公告)日:2016-05-05

    申请号:US14871794

    申请日:2015-09-30

    Applicant: APPLE INC.

    Abstract: Wireless communication devices with multiple receive (RX) chains may be operated to maintain high performance while saving power. This may be accomplished by evaluating signal strength during transmission of the RX packets, and/or evaluating a possible imbalance (gain difference) between the multiple RX chains within the wireless communication device. Signal strength (or good signal) detection may be enabled when non-MIMO (non-multiple-in-multiple-out) transmissions are taking place, while imbalance detection (antenna gain comparison) may be enabled when a specified number of single-stream packets have been received. Once the decision has been made to operate in a reduced number RX path mode, decision to reactivate one or more additional RX paths may be made based on MIMO detection, a detection of a drop in signal quality, and/or upon expiration of a power save timer.

    Abstract translation: 具有多个接收(RX)链的无线通信设备可以被操作以在节省电力的同时保持高性能。 这可以通过在RX分组的传输期间评估信号强度和/或评估无线通信设备内的多个RX链之间的可能的不平衡(增益差)来实现。 当发生非MIMO(非多重多输出)传输时,可以启用信号强度(或良好信号)检测,而当指定数量的单流时,可以启用不平衡检测(天线增益比较) 已收到数据包。 一旦做出了以减少数量的RX路径模式操作的决定,可以基于MIMO检测,信号质量下降检测和/或功率失效来重新激活一个或多个附加RX路径的决定 保存定时器。

    CONTROLLING RADIO TRANSMISSION POWER IN A MULTI-RADIO WIRELESS COMMUNICATION DEVICE
    68.
    发明申请
    CONTROLLING RADIO TRANSMISSION POWER IN A MULTI-RADIO WIRELESS COMMUNICATION DEVICE 有权
    控制多无线电通信设备中的无线传输功率

    公开(公告)号:US20150341869A1

    公开(公告)日:2015-11-26

    申请号:US14282326

    申请日:2014-05-20

    Applicant: Apple Inc.

    Abstract: A method for controlling transmission power in accordance with a total transmission power limit in a multi-radio wireless communication device including a master radio and a slave radio is provided. The method can include the wireless communication device determining, at the master radio, a transmission power of the master radio. The method can further include the wireless communication device providing information indicative of the transmission power of the master radio from the master radio to the slave radio. The method can additionally include determining, at the slave radio, an allowable transmission power for the slave radio. A sum of the allowable transmission power and the transmission power of the master radio may not exceed the total transmission power limit.

    Abstract translation: 提供了一种用于在包括主无线电和从无线电的多无线电无线通信设备中根据总发射功率限制来控制发射功率的方法。 该方法可以包括无线通信设备在主无线电中确定主无线电的发射功率。 该方法还可以包括无线通信设备,其提供指示主无线电从主无线电到从无线电的发送功率的信息。 该方法还可以包括在从属无线电装置处确定从无线电装置的可允许发射功率。 主无线电的允许发送功率和发送功率的总和可以不超过总发送功率限制。

    Increasing power amplifier linearity to facilitate in-device coexistence between wireless communication technologies
    69.
    发明授权
    Increasing power amplifier linearity to facilitate in-device coexistence between wireless communication technologies 有权
    增加功率放大器线性度,以促进无线通信技术之间的设备间共存

    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.

    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。

    Facilitating in-device coexistence between wireless communication technologies
    70.
    发明授权
    Facilitating in-device coexistence between wireless communication technologies 有权
    促进无线通信技术之间的设备间共存

    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.

    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。

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