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    • 6. 发明授权
    • Low-power mode clock management for wireless communication devices
    • 无线通信设备的低功耗模式时钟管理
    • US07702371B2
    • 2010-04-20
    • US11691212
    • 2007-03-26
    • Bruce E. EdwardsMark D. Matson
    • Bruce E. EdwardsMark D. Matson
    • H04M1/00H04B1/38
    • H04W52/029Y02D70/122Y02D70/142Y02D70/144
    • A power management scheme for a wireless communications device substantially implemented on a single CMOS integrated circuit is described. The present invention provides a method and apparatus for generating first and second clock signals for a wireless communication device, with the first and second clock signals corresponding first and second power levels, depending on the operating mode of the wireless communication unit. In the first operating state, the transceiver in the RF analog module is operational and the clock generator provides a first clock signal having the high-speed, high-accuracy characteristics necessary to maintain efficient operation of the transceiver. In a second operating state, the transceiver in the RF analog module is turned off. In this second operational state, the clock generator provides a second clock signal having a frequency and quality sufficient to maintain efficient operation of the digital modules in the wireless communication device. In the second operational state, the high-speed, high-accuracy clock is replaced by a low-power oscillator when the wireless communication unit is operating in a low power mode.
    • 描述了基本上在单个CMOS集成电路上实现的用于无线通信设备的功率管理方案。 本发明提供一种用于产生无线通信设备的第一和第二时钟信号的方法和装置,其中第一和第二时钟信号对应于第一和第二功率电平,这取决于无线通信单元的工作模式。 在第一操作状态下,RF模拟模块中的收发器是可操作的,并且时钟发生器提供具有维持收发器的有效操作所必需的高速,高精度特性的第一时钟信号。 在第二种操作状态下,RF模拟模块中的收发器关闭。 在该第二操作状态下,时钟发生器提供具有足以维持无线通信设备中数字模块的有效操作的频率和质量的第二时钟信号。 在第二操作状态下,当无线通信单元以低功率模式工作时,高速,高精度时钟由低功率振荡器代替。
    • 9. 发明授权
    • Method for combining multiple frames of data into a single medium access
    • 用于将多帧数据组合成单个介质访问的方法
    • US07554966B2
    • 2009-06-30
    • US11137689
    • 2005-05-25
    • Bruce E. EdwardsMatthew J. Fischer
    • Bruce E. EdwardsMatthew J. Fischer
    • H04L12/56
    • H04W28/06
    • A method of combining multiple frames of data into a single access to a shared communications medium improves network efficiency transmitting in a fashion compatible with legacy network equipment. An increase in the efficiency of use of a shared communications medium is realized by amortizing the overhead of fixed elements of a communication protocol over multiple frames. The sharing of preamble signaling, elimination of multiple inter-frame gaps or spaces, and the use of a legacy signal field permits a representative embodiment of the present invention to more effectively use a shared communication medium, while in addition providing backward compatible support for legacy network stations.
    • 将多帧数据组合成对共享通信介质的单一访问的方法以与传统网络设备兼容的方式提高网络效率传输。 通过在多个帧上分摊通信协议的固定元件的开销来实现共享通信介质的使用效率的提高。 前导码信令的共享,多个帧间间隙或空格的消除以及传统信号字段的使用允许本发明的代表性实施例更有效地使用共享通信介质,而另外提供向后兼容的支持传统 网站。