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    • 4. 发明申请
    • ANTENNA SWITCHING SYSTEM WITH ADAPTIVE SWITCHING CRITERIA
    • 具有自适应开关标准的天线开关系统
    • WO2013019720A1
    • 2013-02-07
    • PCT/US2012/048838
    • 2012-07-30
    • APPLE INC.MUJTABA, Syed A.SONG, Kee-Bong
    • MUJTABA, Syed A.SONG, Kee-Bong
    • H04B7/08
    • H04B1/0064G01S19/13H04B1/1027H04B7/0808H04B7/082H04B7/0834H04W64/006H04W88/06
    • Electronic devices are be provided that contain wireless communications circuitry. The wireless communications circuitry includes radio-frequency transceiver circuitry coupled to multiple antennas. Signal strength measurements are gathered using the antennas and corresponding signal strength difference measurements are produced to reflect which of the antennas is exhibiting superior performing. The signal strength difference measurements are filtered using time-based averaging filters with different speeds. Corresponding filtered difference measurements are compared to antenna switching criteria such as antenna switching thresholds. An antenna switching threshold is adjusted in real time based on computations of how much variation is exhibited as a function of time between the difference measurements filtered using the filters of different speeds. In addition, information on device movement or other data may be used in making threshold adjustments.
    • 提供包含无线通信电路的电子设备。 无线通信电路包括耦合到多个天线的射频收发器电路。 使用天线收集信号强度测量值,产生相应的信号强度差测量结果,以反映哪些天线表现出优异的性能。 使用具有不同速度的基于时间的平均滤波器对信号强度差测量值进行滤波。 将相应的滤波差分测量与天线切换标准(例如天线切换阈值)进行比较。 基于使用不同速度的滤波器滤波的差分测量值作为时间的函数的变化量的计算,实时地调整天线切换阈值。 此外,关于设备移动或其他数据的信息可用于进行阈值调整。
    • 5. 发明申请
    • ELECTRONIC DEVICE WITH IDLE MODE ANTENNA SWITCHING
    • 具有空闲模式天线开关的电子设备
    • WO2012151092A1
    • 2012-11-08
    • PCT/US2012035013
    • 2012-04-25
    • APPLE INCMUJTABA SYED ASONG KEE-BONGKIM YOUNGJAE
    • MUJTABA SYED ASONG KEE-BONGKIM YOUNGJAE
    • H04B7/08
    • H04B7/0814H04W52/0245Y02D70/00Y02D70/1242Y02D70/1262Y02D70/142Y02D70/144Y02D70/146Y02D70/164Y02D70/23Y02D70/26Y02D70/444
    • Electronic devices may be provided that contain wireless communication circuitry. The wireless communication circuitry may include radio-frequency transceiver circuitry coupled to multiple antennas. An electronic device may alternate between a sleep mode and a wake mode. During wake mode, the electronic device may monitor a paging channel in a wireless network for incoming paging signals. The device may use a selected one of the multiple antennas in monitoring the paging channel. If received signal quality is satisfactory, the device may maintain use of the selected one of the multiple antennas for subsequent wake period monitoring of the paging channel. If received signal quality falls below a threshold or is otherwise indicated to not be satisfactory, the device may switch to use of a different one of the multiple antennas in monitoring the paging channel. Other criteria may also be used in controlling the switching between antennas for paging channel monitoring.
    • 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耦合到多个天线的射频收发器电路。 电子设备可以在睡眠模式和唤醒模式之间交替。 在唤醒模式期间,电子设备可以监视无线网络中的呼入寻呼信号的寻呼信道。 该设备可以使用多个天线中所选择的一个来监视寻呼信道。 如果接收到的信号质量令人满意,则设备可以保持对多个天线中所选择的一个天线的使用以用于寻呼信道的随后的唤醒周期监视。 如果接收到的信号质量低于阈值或被指示为不令人满意,则在监视寻呼信道时,设备可以切换到使用多个天线中的不同的天线。 其他标准也可以用于控制用于寻呼信道监测的天线之间的切换。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR IMPROVED ANTENNA ISOLATION FOR PER-ANTENNA TRAINING USING VARIABLE SCALING
    • 改进天线分离的方法和装置,使用可变尺度进行天线训练
    • WO2007111632A1
    • 2007-10-04
    • PCT/US2006/029559
    • 2006-07-31
    • AGERE SYSTEMS INC.CAMPBELL, Edward, E.MUJTABA, Syed, A.
    • CAMPBELL, Edward, E.MUJTABA, Syed, A.
    • H04B7/04
    • H04L25/022H04B7/04H04B7/0602H04B7/0615H04B7/0684H04L25/0224
    • Methods and apparatus are provided for per-antenna training in a multiple antenna communication system having a plurality of transmit antenna branches. A long training sequence is transmitted on each of the transmit antenna branches such that only one of the transmit antenna branches is active at a given time. The active transmit antenna branch transmits the long training sequence with an increased power level relative to a transmission of a payload by the active transmit antenna branch. The increased power level for the active transmit antenna branch compensates for the inactive transmit antenna branches being silent during the given time. Thus, the active transmit antenna branch provides approximately the same antenna power while transmitting the long training sequence as a total power of the plurality of transmit antenna branches during a transmission of the payload. The increased power level can be provided, for example, by a digital-to-analog converter associated with the active transmit antenna branch.
    • 在具有多个发射天线分支的多天线通信系统中提供用于每天线训练的方法和装置。 在每个发射天线分支上发送长训练序列,使得在给定时间只有一个发射天线分支是活动的。 有源发射天线分支相对于有源发射天线分支的有效载荷的传输具有增加的功率电平来传输长训练序列。 有源发射天线支路的增加的功率电平补偿在给定时间内无效的发射天线分支是无声的。 因此,有源发射天线分支提供大致相同的天线功率,同时在有效载荷的传输期间发送长训练序列作为多个发射天线分支的总功率。 增加的功率电平可以例如由与有源发射天线分支相关联的数模转换器提供。
    • 8. 发明申请
    • METHODS FOR TRANSMIT ANTENNA SWITCHING DURING UPLINK ACCESS PROBING
    • 在上行链路访问探测中发送天线切换的方法
    • WO2013019718A1
    • 2013-02-07
    • PCT/US2012/048836
    • 2012-07-30
    • APPLE INC.MUJTABA, Syed A.KIM, YoungjaeSONG, Kee-BongWANG, Xiaowen
    • MUJTABA, Syed A.KIM, YoungjaeSONG, Kee-BongWANG, Xiaowen
    • H04B7/06H04W52/50H04B7/04
    • H04W52/50H04B7/0404H04B7/0604
    • Electronic devices are be provided that contain wireless communication circuitry. The wireless communication circuitry includes radio-frequency transceiver circuitry coupled to first and second antennas. An electronic device sends network access probe signals to a base station in a wireless network. If the base station responds with a corresponding acknowledgement, the electronic device and base station establish a wireless communication link such as a cellular telephone link. In response to failure to receive the acknowledgement signal from the base station, the electronic device increases the transmit power of a successive network access probe signal. The electronic device switchs between use of the first and second antennas when transmitting the network access probe signals. The electronic device alternates between the first and second antennas or uses other antenna usage patterns.
    • 提供包含无线通信电路的电子设备。 无线通信电路包括耦合到第一和第二天线的射频收发器电路。 电子设备向无线网络中的基站发送网络接入探测信号。 如果基站用相应的确认进行响应,则电子设备和基站建立诸如蜂窝电话链路的无线通信链路。 响应于不能从基站接收确认信号,电子设备增加了连续网络接入探测信号的发射功率。 当发送网络接入探测信号时,电子设备在使用第一和第二天线之间切换。 电子设备在第一和第二天线之间交替,或者使用其它天线使用模式。