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    • 2. 发明授权
    • Method for mitigating adverse processor loading in a personal computer implementation of a wireless local area network adapter
    • 用于减轻无线局域网适配器的个人计算机实现中的不利处理器负载的方法
    • US07788397B1
    • 2010-08-31
    • US10625799
    • 2003-07-23
    • Richard Douglas SchultzGeorge Rodney Nelson, Jr.John Erich Hoffmann
    • Richard Douglas SchultzGeorge Rodney Nelson, Jr.John Erich Hoffmann
    • G06F15/16G08C17/00H04B1/38
    • H04L43/16H04L43/0894
    • A personal computer's (PC) microprocessor is used to provide both the physical layer (PHY) and media access control (MAC) processing functions required to implement a wireless local area network (WLAN) adapter. This technique uses the polling mechanism associated with the power save (PS) functionality of WLAN protocol to relieve networking stress on the host processing system. It does this while maintaining networking integrity and packet delivery. The WLAN protocol polling mechanism is used to briefly inhibit the transfer of packets from the WLAN access point (AP) during peak periods of network traffic and/or host processor loading. Because the modulation, demodulation, and MAC functions, typically implemented in dedicated hardware on existing adapters are implemented in software running on the host PC microprocessor, other host system processes and applications can interfere with these time critical functions. Conversely, latency introduced by WLAN specific processing tasks during peak periods of network traffic may cause unacceptable delays to the other processes and applications requiring microprocessor attention. In addition to its primary stated purpose of allowing WLAN mobile stations to save power, this technique will use power save polling as a method for controlling delivery of network packets when the host is heavily loaded or when peak interrupt latencies make reliable packet delivery difficult or impossible.
    • 个人计算机(PC)微处理器用于提供实现无线局域网(WLAN)适配器所需的物理层(PHY)和媒体访问控制(MAC)处理功能。 该技术使用与WLAN协议的功率节省(PS)功能相关联的轮询机制来减轻主机处理系统上的网络压力。 它同时保持网络完整性和数据包传输。 WLAN协议轮询机制用于在网络流量和/或主处理器加载的高峰期期间短暂禁止从WLAN接入点(AP)传送数据包。 由于通常在现有适配器上的专用硬件中实现的调制,解调和MAC功能在主机PC微处理器上运行的软件中实现,所以其他主机系统进程和应用程序可能会干扰这些时间关键功能。 相反,由网络流量高峰期的WLAN特定处理任务引入的延迟可能会对需要微处理器注意的其他进程和应用程序造成不可接受的延迟。 除了主要规定的允许WLAN移动台节省电力的目的之外,该技术还将使用省电轮询作为在主机严重加载时控制网络分组传送的方法,或者当峰值中断延迟使得可靠的分组传送困难或不可能时 。
    • 5. 发明授权
    • Method and apparatus for antenna control in a communications network
    • 通信网络中天线控制的方法和装置
    • US06400317B2
    • 2002-06-04
    • US09776397
    • 2001-02-02
    • Antoine J. RouphaelDaniel Innis RileyJohn Erich HoffmannGeorge Rodney Nelson, Jr.James Arthur Proctor, Jr.
    • Antoine J. RouphaelDaniel Innis RileyJohn Erich HoffmannGeorge Rodney Nelson, Jr.James Arthur Proctor, Jr.
    • H04B700
    • H01Q1/246H01Q3/2605H04B7/0874
    • An antenna apparatus for increasing the capacity in a cellular communication system. The antenna operates in conjunction with a mobile subscriber unit and provides a plurality of antenna elements, each coupled to a respective signal control component to provide a weight to the signal transmitted from each element. The weight for each antenna element is adjusted to achieve optimum reception during, for example, an idle mode when a pilot signal is received. The weight values cause the antenna array to create a beam former for signals to be transmitted from the mobile subscriber unit, and a directional receiving array to more optimally detect and receive signals transmitted from the base station. By directionally receiving and transmitting signals, multipath fading and intercell interference are greatly reduced. The weights are adjusted at the transmitting site in accord with signal quality metric information determined at the receiving site. The signal quality metric information is returned to the transmitting site where the optimum signal quality metric is determined. The weights at the transmitting site are then set to provide the antenna directional angle represented by the optimum signal quality metric.
    • 一种用于增加蜂窝通信系统中的容量的天线装置。 天线与移动用户单元结合操作并提供多个天线元件,每个天线元件耦合到相应的信号控制部件,以向从每个元件传输的信号提供权重。 当接收到导频信号时,调整每个天线元件的权重以在例如空闲模式期间实现最佳接收。 重量值导致天线阵列产生用于从移动用户单元发射的信号的波束成形器,以及定向接收阵列,以更好地检测和接收从基站发送的信号。 通过定向接收和发送信号,大大减少了多径衰落和小区间干扰。 根据在接收点确定的信号质量度量信息,在发送站点处调整权重。 信号质量度量信息被返回到确定最佳信号质量度量的发送站点。 然后将发送站点处的权重设置为提供由最佳信号质量度量表示的天线方向角度。