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    Antenna adaptation in a time division duplexing system
    2.
    发明授权
    Antenna adaptation in a time division duplexing system 有权
    时分双工系统中的天线适配

    公开(公告)号：US07308285B2

    公开(公告)日：2007-12-11

    申请号：US10434437

    申请日：2003-05-07

    申请人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John A. Regnier

    发明人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John A. Regnier

    IPC分类号： H04M1/00

    CPC分类号： H04W52/08 ,  H01Q3/26 ,  H04B7/022 ,  H04B17/327 ,  H04W52/143 ,  H04W52/146 ,  H04W52/18 ,  H04W52/24 ,  H04W52/242 ,  H04W52/283 ,  H04W52/40 ,  H04W52/42

    摘要： A technique for steering a directional antenna such as may be used with User Equipment (UE) in a wireless communication system. Optimum angle settings for the directional antenna are determined as different values for an uplink and downlink; that is for simple reception and simple transmission. Thus, rather than determine compromised directions that are picked in an attempt to optimize transmission and reception with the same directional setting, directional settings may be optimized independently. The invention is of particular use in a Time Division Duplex (TDD) system where transmit and receive functions can be operating independently at different times. In further aspects, an optimum direction is determined by estimating an interference signal power which is detected from signals emanating from adjacent base stations (access points) and determining a directional setting that minimizes interference to adjacent cells based upon such measurements. A further level of sophistication in antenna angle setting, is to monitor the loading of adjacent cell sites base stations and turning interference and determine the settings accordingly to minimize interference to such heavily loaded neighbors. Further aspects of the invention adapts to acquisition modes that accommodate the directional setting in active use of the system.

    摘要翻译： 用于在无线通信系统中用于指导定向天线的技术，例如可以与用户设备（UE）一起使用。 定向天线的最佳角度设置被确定为上行链路和下行链路的不同值; 这是为了简单的接收和简单的传输。 因此，可以独立地优化方向设置，而不是确定在尝试以相同的方向设置来优化发送和接收的挑选方向。 本发明在时分双工（TDD）系统中特别有用，其中发送和接收功能可以在不同时间独立运行。 在另外的方面，通过估计从相邻基站（接入点）发出的信号中检测到的干扰信号功率，并且基于这样的测量确定最小化对相邻小区的干扰的方向设置来确定最佳方向。 在天线角度设置方面的进一步的复杂程度是监视相邻小区站点基站的负荷和转向干扰，并相应地确定设置以最小化对这种负载较重的邻居的干扰。 本发明的另外的方面适应于在系统的主动使用中适应方向设置的采集模式。

    Qualifying available reverse link coding rates from access channel power setting
    3.
    发明授权
    Qualifying available reverse link coding rates from access channel power setting 有权
    从接入信道功率设置合格的可用的反向链路编码率

    公开(公告)号：US08811367B2

    公开(公告)日：2014-08-19

    申请号：US11295270

    申请日：2005-12-06

    申请人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John E. Hoffmann ,  Antoine J. Rouphael

    发明人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John E. Hoffmann ,  Antoine J. Rouphael

    IPC分类号： H04B7/216

    CPC分类号： H04W72/042 ,  H04J13/00 ,  H04J13/0003 ,  H04L5/22 ,  H04W24/00 ,  H04W28/22 ,  H04W48/08 ,  H04W52/24 ,  H04W52/26 ,  H04W52/365 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/1289 ,  Y02D70/00

    摘要： Data rate allocation decisions are made for a communications channel. A message is sent on a communication channel such as on a paging channel. The message indicates a forward Effective Radiate Power (ERP) of a pilot signal transmitted. The remote station then determines the received signal strength of this pilot signal, taking into account receiver gains. The path loss may be estimated as the difference between the forward ERP data value received and the detected received pilot power. This transmit power level information is encoded as a digital data word together with the forward path loss information. Upon transmission, the forward path loss estimate as calculated and the output power value can then help determine the amount of excess power available. This is indicative of the amount of dynamic range available in the transmit power amplifier. Coding rates which require a higher dynamic range may be acceptable for use.

    摘要翻译： 对通信信道进行数据速率分配决定。 在诸如寻呼信道的通信信道上发送消息。 该消息表示发送的导频信号的前向有效辐射功率（ERP）。 然后，远程站在考虑到接收机增益的情况下确定该导频信号的接收信号强度。 可以将路径损耗估计为所接收的前向ERP数据值与检测到的接收导频功率之间的差。 该发送功率电平信息与前向路径损耗信息一起被编码为数字数据字。 在传输时，计算出的前向路径损耗估计值和输出功率值可以帮助确定可用的多余功率量。 这表示发射功率放大器中可用的动态范围的量。 需要更高动态范围的编码速率可能是可以接受的。

    Access channel structure for wireless communication system
    6.
    发明授权
    Access channel structure for wireless communication system 有权
    无线通信系统的接入信道结构

    公开(公告)号：US07483473B2

    公开(公告)日：2009-01-27

    申请号：US11103202

    申请日：2005-04-11

    申请人： John E. Hoffmann ,  George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  Antoine J. Rouphael

    发明人： John E. Hoffmann ,  George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  Antoine J. Rouphael

    IPC分类号： H04L27/30

    CPC分类号： H04L5/0046 ,  H04B1/707 ,  H04B2201/70701 ,  H04L7/041

    摘要： A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or epoch, a portion is dedicated to sending only pilot symbols. Another portion of the frame is reserved for sending mostly data symbols; however, within this second portion of the frame, additional pilot symbols are interleaved among the data symbols. The pilot symbol or preamble portion of the access channel frame allows for efficient acquisition of the access signal at the base station, while providing a timing reference for determining the effects of multipath fading. In particular, a pilot correlation filter provides a phase estimate from the pilot symbols in the preamble portion, which is then used to decode the data symbols in the payload portion. An access acquisition portion of the receiver uses the phase estimates provided by the pilot correlation filter to process the output of a data symbol correlation filter. The additional pilot symbols embedded in the payload portion are used in a cross product operation to further resolve the effects of multipath fading.

    摘要翻译： 一种在无线通信系统中在反向链路上有效实现导频信号的技术。 为反向链路定义了一个接入信道，使得在每个帧或时期内，一部分专用于仅发送导频符号。 帧的另一部分保留用于主要发送数据符号; 然而，在帧的该第二部分内，在数据符号之间交织附加的导频符号。 访问信道帧的导频符号或前导码部分允许在基站处有效地获取接入信号，同时提供用于确定多径衰落的影响的定时参考。 具体地，导频相关滤波器从前导码部分中的导频符号提供相位估计，然后该导频符号用于解码有效载荷部分中的数据符号。 接收机的访问获取部分使用由导频相关滤波器提供的相位估计来处理数据符号相关滤波器的输出。 嵌入在有效载荷部分中的附加导频符号用于交叉乘积运算，以进一步解决多路径衰落的影响。

    Qualifying available reverse link coding rates from access channel power setting
    7.
    发明授权
    Qualifying available reverse link coding rates from access channel power setting 有权

    公开(公告)号：US07006483B2

    公开(公告)日：2006-02-28

    申请号：US09792637

    申请日：2001-02-23

    申请人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John E. Hoffmann ,  Antoine J. Rouphael

    发明人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John E. Hoffmann ,  Antoine J. Rouphael

    IPC分类号： H04B7/212

    CPC分类号： H04W72/042 ,  H04J13/00 ,  H04J13/0003 ,  H04L5/22 ,  H04W24/00 ,  H04W28/22 ,  H04W48/08 ,  H04W52/24 ,  H04W52/26 ,  H04W52/365 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/1289 ,  Y02D70/00

    摘要： Data rate allocation decisions are made for a communications channel, such as a wireless reverse link connection. A first parameter used in this determination is a path loss, which is determined by the following process. First, a message is sent from a first station to a second station, such as on a paging channel. The message indicates a forward Effective Radiated Power (ERP) of a pilot signal transmitted by the first station. The second station then determines the received signal strength of this pilot signal, taking into account receiver gains. The path loss can then be estimated by the second station as the difference between the forward ERP data value that it received and the detected received pilot power. The second station also then preferably determines a transmit power level when transmitting a message back to the first station. This transmit power level information is encoded as a digital data word together with the forward path loss information as calculated by the first station. Upon receipt of these two pieces of information by the first station, the forward path loss estimate as calculated by the second station, and the output power value of the second station, the first station can then determine the amount of excess power available at the field unit. This excess power difference is indicative of the amount of dynamic range available in the transmit power amplifier in the particular second station. With this information, the first station can then make a determination as to whether coding rates which require a higher dynamic range will be acceptable for use by the particular second station.