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    • 82. 发明授权
    • Medium access control protocol for OFDM wireless networks
    • 用于OFDM无线网络的媒体接入控制协议
    • US07551578B2
    • 2009-06-23
    • US11221430
    • 2005-09-08
    • Michael A. PollackVincent K. JonesGregory G. Raleigh
    • Michael A. PollackVincent K. JonesGregory G. Raleigh
    • H04W4/00
    • H04L5/023H04L27/2602
    • A medium access contention protocol that is highly beneficial in wireless networks and particularly in wireless networks that employ a fixed minimum burst size such as OFDM wireless networks. In one embodiment, a MAC protocol is a demand-assigned protocol that maximizes utilization of the bus medium (the allocated frequency spectrum.) Each data communication device (DCD) in the network communicates with a central access point (AP). Multiple DCDs may request access from the AP in the same request access (RA) burst. Each of the multiple DCDs transmits its access request to the AP within a frequency domain channel in the RA burst that is orthogonal to the frequency domain channels used by the other DCDs requesting access. Each DCD includes channel training information in the access request burst to allow the AP and/or DCD to adapt to rapid variations in channel characteristics.
    • 一种媒体接入争用协议,其在无线网络中,特别是在使用诸如OFDM无线网络的固定的最小突发大小的无线网络中是非常有益的。 在一个实施例中,MAC协议是使总线介质(所分配的频谱)的利用最大化的需求分配协议。网络中的每个数据通信设备(DCD)与中央接入点(AP)通信。 多个DCD可以在相同的请求访问(RA)突发中请求来自AP的访问。 多个DCD中的每一个在RA突发中的频域信道内向AP发送其接入请求,该RA突发与正在其他DCD请求接入的频域信道正交。 每个DCD包括访问请求突发中的信道训练信息,以允许AP和/或DCD适应信道特性的快速变化。
    • 86. 发明授权
    • Wireless base station with near-far gain compensation
    • 无线基站具有近远增益补偿
    • US6075991A
    • 2000-06-13
    • US813003
    • 1997-03-04
    • Gregory G. RaleighMichael A. Pollack
    • Gregory G. RaleighMichael A. Pollack
    • H04B1/12H04W88/08H04B7/00H04B1/06
    • H04W88/08H04B1/123
    • A wireless base station receiver receives weak signals from mobile units at a first position using a first receiver configuration and strong signals from mobile units at a second position using a second receiver configuration. The base station receiver includes an input terminal to receive an inbound signal from each mobile unit. A diplexer is coupled to the input terminal and configured to receive the inbound signal and to pass a first frequency band of the inbound signal as a first signal, and to pass a second frequency band of the inbound signal as a second signal. An attenuator is coupled to the diplexer and configured to attenuate the second signal to create a third signal. A downconverter is coupled to the diplexer and the attenuator and configured to downconvert the first signal and the third signal to provide a downconverted inbound signal. An analog to digital converter coupled to the downconverter and configured to convert the down converted inbound signal to a digital signal. Advantages of the invention include the ability to compensate for the gain required to receive inbound signals from near and far mobile units.
    • 无线基站接收机使用第一接收机配置从第一位置的移动单元接收弱信号,并且使用第二接收器配置从第二位置的移动单元接收强信号。 基站接收机包括用于从每个移动单元接收入站信号的输入端。 双工器耦合到输入端并且被配置为接收入站信号并且将入站信号的第一频带作为第一信号通过,并且作为第二信号通过入站信号的第二频带。 衰减器耦合到双工器并且被配置为衰减第二信号以产生第三信号。 下变频器耦合到双工器和衰减器,并且被配置为下变频第一信号和第三信号以提供下变频的入站信号。 耦合到下变频器并且被配置成将下变频的入站信号转换为数字信号的模数转换器。 本发明的优点包括补偿从近端和远端移动单元接收入站信号所需的增益的能力。
    • 88. 发明授权
    • Security techniques for device assisted services
    • 设备辅助服务的安全技术
    • US08391834B2
    • 2013-03-05
    • US12694445
    • 2010-01-27
    • Gregory G. Raleigh
    • Gregory G. Raleigh
    • H04M11/00H04M15/00
    • H04W12/08G06F21/53G06F21/55G06F2221/2101G06F2221/2115G06F2221/2149H04L63/0428H04L63/145
    • Security techniques for device assisted services are provided. In some embodiments, secure service measurement and/or control execution partition is provided. In some embodiments, implementing a service profile executed at least in part in a secure execution environment of a processor of a communications device for assisting control of the communications device use of a service on a wireless network, in which the service profile includes a plurality of service policy settings, and wherein the service profile is associated with a service plan that provides for access to the service on the wireless network; monitoring use of the service based on the service profile; and verifying the use of the service based on the monitored use of the service.
    • 提供了设备辅助服务的安全技术。 在一些实施例中,提供了安全服务测量和/或控制执行分区。 在一些实施例中,实现至少部分地在通信设备的处理器的安全执行环境中执行的服务简档,用于协助控制通信设备在无线网络上的服务的使用,其中服务简档包括多个 服务策略设置,并且其中服务简档与提供对无线网络上的服务的访问的服务计划相关联; 基于服务简档监视服务的使用; 以及基于所监视的服务使用来验证服务的使用。