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    • 50. 发明授权
    • Adaptive beamforming configuration methods and apparatus for wireless access points serving as handoff indication mechanisms in wireless local area networks
    • 用于无线接入点的自适应波束成形配置方法和装置用作无线局域网中的切换指示机制
    • US07936724B2
    • 2011-05-03
    • US12700118
    • 2010-02-04
    • Vytautas Robertas Kezys
    • Vytautas Robertas Kezys
    • H04W4/00
    • H04W24/02H04W16/18H04W28/08H04W36/0083
    • In one illustrative example, a wireless access point of a wireless local area network (WLAN) includes an antenna array, a wireless transceiver array coupled to the antenna array, and one or more processors which are coupled to the wireless transceiver array. The one or more processors are adapted to operate the wireless access point in a configuration mode and a handoff indication mode. In the configuration mode, the one or more processors are adapted to operate the wireless access point to receive, via the wireless transceiver array, RF signals from one or more communication devices and determine and set wireless transceiver parameters for adjusting boundaries of an RF coverage region of the wireless access point based on these RF signals. In the handoff indication mode, the one or more processors set the wireless access point with the adjusted RF coverage region (adjusted from the configuration mode), where handoff indications are communicated in response to mobile devices leaving the WLAN coverage region through the adjusted RF coverage region for handoff to a wireless wide area network (WWAN).
    • 在一个说明性示例中,无线局域网(WLAN)的无线接入点包括天线阵列,耦合到天线阵列的无线收发器阵列以及耦合到无线收发器阵列的一个或多个处理器。 一个或多个处理器适于在配置模式和切换指示模式下操作无线接入点。 在配置模式中,一个或多个处理器适于操作无线接入点以经由无线收发器阵列从一个或多个通信设备接收RF信号,并且确定和设置用于调整RF覆盖区域的边界的无线收发器参数 基于这些RF信号的无线接入点。 在切换指示模式中,一个或多个处理器设置具有经调整的RF覆盖区域(从配置模式调整)的无线接入点,其中响应于通过经调整的RF覆盖离开WLAN覆盖区域的移动设备来传送切换指示 用于切换到无线广域网(WWAN)的区域。