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    Techniques for estimating received signal strength and carrier to interference and noise ratio in OFDM systems
    1.
    发明授权
    Techniques for estimating received signal strength and carrier to interference and noise ratio in OFDM systems 有权
    用于估计OFDM系统中的接收信号强度和载波与干扰和噪声比的技术

    公开(公告)号：US07912113B2

    公开(公告)日：2011-03-22

    申请号：US11867802

    申请日：2007-10-05

    申请人： Krishna Kamal Sayana ,  Xiangyang Zhuang ,  Kenneth A. Stewart ,  Pallav Sudarshan

    发明人： Krishna Kamal Sayana ,  Xiangyang Zhuang ,  Kenneth A. Stewart ,  Pallav Sudarshan

    IPC分类号： H04L27/30

    CPC分类号： H04B17/336 ,  H04B17/318

    摘要： A technique for determining a received signal strength indicator of a target base station at a subscriber station includes performing a discrete Fourier transform on a received signal to provide a transformed signal. In this case, the transformed signal occupies one or more segments of a channel and the one or more segments each include multiple subcarriers. A shift-n cross-correlation is calculated based on the transformed signal and a preamble sequence of the target base station to provide a coarse received signal strength indicator for the target base station.

    摘要翻译： 用于确定用户站处的目标基站的接收信号强度指示符的技术包括对接收到的信号执行离散付里叶变换以提供经变换的信号。 在这种情况下，变换的信号占用信道的一个或多个段，并且一个或多个段各自包括多个子载波。 基于变换的信号和目标基站的前导序列来计算移位n互相关，以为目标基站提供粗略的接收信号强度指示符。

    Method and Apparatus for Interference Cancellation in a Wireless Communication System
    2.
    发明申请
    Method and Apparatus for Interference Cancellation in a Wireless Communication System 审中-公开
    无线通信系统中干扰消除的方法和装置

    公开(公告)号：US20090280747A1

    公开(公告)日：2009-11-12

    申请号：US12116582

    申请日：2008-05-07

    申请人： Pallav Sudarshan ,  Kenneth A. Stewart ,  Xiangyang Zhuang

    发明人： Pallav Sudarshan ,  Kenneth A. Stewart ,  Xiangyang Zhuang

    IPC分类号： H04B15/00 ,  H04B1/06

    CPC分类号： H04L25/0204 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/021 ,  H04L25/0228 ,  H04L25/0242 ,  H04L27/2605 ,  H04L27/2647 ,  H04W72/085

    摘要： A mobile device estimates a data symbol from a received signal by using one or more interference cancellation algorithms. For one interference cancellation algorithm, the mobile device calculates a correction factor by estimating a Doppler speed and a time difference between a first time interval like a preamble symbol and a second time interval like any symbol of interest in an assigned data allocation in the data zone. Using the correction factor, the mobile device updates outdated interference information. The mobile device cancels interference in the received signal distorted by co-channel interference by using the updated interference information. Also, the mobile device is configured to combine results of multiple interference cancellation algorithms based on the applicability of the individual interference cancellation algorithms in particular scenarios.

    摘要翻译： 移动设备通过使用一个或多个干扰消除算法从接收信号估计数据符号。 对于一个干扰消除算法，移动设备通过在数据区域中的分配的数据分配中估计多普勒速度和诸如前导码符号的第一时间间隔和第二时间间隔之间的时间差，像任何感兴趣的符号， 。 使用校正因子，移动设备更新过时的干扰信息。 移动设备通过使用更新的干扰信息来消除由同信道干扰失真的接收信号的干扰。 此外，移动设备被配置为基于在特定情况下各个干扰消除算法的适用性来组合多个干扰消除算法的结果。

    Flexible frame structure in wireless communication system
    3.
    发明授权
    Flexible frame structure in wireless communication system 有权
    无线通信系统中灵活的帧结构

    公开(公告)号：US08422411B2

    公开(公告)日：2013-04-16

    申请号：US11868526

    申请日：2007-10-07

    申请人： Pallav Sudarshan ,  Kenneth A. Stewart ,  Xiangyang Zhuang

    发明人： Pallav Sudarshan ,  Kenneth A. Stewart ,  Xiangyang Zhuang

    IPC分类号： H04J1/00 ,  H04J3/00 ,  H04W4/00

    CPC分类号： H04B7/2656

    摘要： A wireless communication system frame structure configurable to serve to half-duplex user terminals or a mixture of half-duplex and full-duplex user terminals based on a grouping of the user terminals according to one or more criteria. In one embodiment, user terminals are switched from one group to another. A user terminal signaling mechanism is also provided.

    摘要翻译： 一种无线通信系统帧结构，其可配置为根据一个或多个标准，基于用户终端的分组来服务于半双工用户终端或半双工和全双工用户终端的混合。 在一个实施例中，用户终端从一组切换到另一组。 还提供了一种用户终端信令机制。

    Techniques for Estimating Received Signal Strength and Carrier to Interference and Noise Ratio in OFDM Systems
    4.
    发明申请
    Techniques for Estimating Received Signal Strength and Carrier to Interference and Noise Ratio in OFDM Systems 有权
    OFDM系统中估计接收信号强度和载波干扰和噪声比的技术

    公开(公告)号：US20090092178A1

    公开(公告)日：2009-04-09

    申请号：US11867802

    申请日：2007-10-05

    申请人： Krishna Kamal Sayana ,  Xiangyang Zhuang ,  Kenneth A. Stewart ,  Pallav Sudarshan

    发明人： Krishna Kamal Sayana ,  Xiangyang Zhuang ,  Kenneth A. Stewart ,  Pallav Sudarshan

    IPC分类号： H04B17/00

    CPC分类号： H04B17/336 ,  H04B17/318

    摘要： A technique for determining a received signal strength indicator of a target base station at a subscriber station includes performing a discrete Fourier transform on a received signal to provide a transformed signal. In this case, the transformed signal occupies one or more segments of a channel and the one or more segments each include multiple subcarriers. A shift-n cross-correlation is calculated based on the transformed signal and a preamble sequence of the target base station to provide a coarse received signal strength indicator for the target base station.

    摘要翻译： 用于确定用户站处的目标基站的接收信号强度指示符的技术包括对接收到的信号执行离散付里叶变换以提供经变换的信号。 在这种情况下，变换的信号占用信道的一个或多个段，并且一个或多个段各自包括多个子载波。 基于变换的信号和目标基站的前导序列来计算移位n互相关，以为目标基站提供粗略的接收信号强度指示符。

    METHOD FOR SUPPORTING FLEXIBLE FRAME STRUCTURES IN WIRELESS COMMUNICATION SYSTEMS
    6.
    发明申请
    METHOD FOR SUPPORTING FLEXIBLE FRAME STRUCTURES IN WIRELESS COMMUNICATION SYSTEMS 有权
    在无线通信系统中支持柔性框架结构的方法

    公开(公告)号：US20090219841A1

    公开(公告)日：2009-09-03

    申请号：US12388727

    申请日：2009-02-19

    申请人： Pallav Sudarshan ,  Gerrit W. Hiddink ,  Xiangyang Zhuang

    发明人： Pallav Sudarshan ,  Gerrit W. Hiddink ,  Xiangyang Zhuang

    IPC分类号： H04J1/00

    CPC分类号： H04L5/14 ,  H04L5/0007 ,  H04L5/0091 ,  H04L5/0094 ,  H04W72/121 ,  H04W72/1273 ,  H04W72/1289

    摘要： A wireless communication base station including a transceiver coupled to a controller configured to cause the base station to serve a plurality of user terminals in a series of downlink radio frames each having a first temporal region and a second temporal region. The controller is configured to assign the plurality of user terminals to first and second groups, wherein the user terminals in the first group are served in the first temporal region of the downlink radio frame and the user terminals in the second group are served in the second temporal region of the downlink radio frame. The controller is also configured to change a duration of either of the first and second temporal regions of at least one downlink radio frame in the series of downlink radio frames, wherein a downlink radio frame contains an indicator signaling a change of duration of either of the first or second temporal regions of at least one downlink radio frame in the series of downlink radio frames.

    摘要翻译： 一种无线通信基站，包括耦合到控制器的收发器，所述控制器被配置为使得所述基站在一系列具有第一时间区域和第二时间区域的下行链路无线电帧中服务多个用户终端。 控制器被配置为将多个用户终端分配给第一组和第二组，其中第一组中的用户终端在下行链路无线电帧的第一时间区域中被服务，并且第二组中的用户终端在第二组中被服务 下行链路无线电帧的时间区域。 控制器还被配置为改变下行链路无线电帧系列中的至少一个下行链路无线电帧的第一和第二时间区域中的任一个的持续时间，其中下行链路无线电帧包含指示任一个 一系列下行链路无线电帧中的至少一个下行链路无线电帧的第一或第二时域。

    Method for supporting flexible frame structures in wireless communication systems
    7.
    发明授权
    Method for supporting flexible frame structures in wireless communication systems 有权
    在无线通信系统中支持灵活框架结构的方法

    公开(公告)号：US09118465B2

    公开(公告)日：2015-08-25

    申请号：US12388727

    申请日：2009-02-19

    申请人： Pallav Sudarshan ,  Gerrit W Hiddink ,  Xiangyang Zhuang

    发明人： Pallav Sudarshan ,  Gerrit W Hiddink ,  Xiangyang Zhuang

    IPC分类号： H04J1/00 ,  H04L5/14 ,  H04L5/00 ,  H04W72/12

    CPC分类号： H04L5/14 ,  H04L5/0007 ,  H04L5/0091 ,  H04L5/0094 ,  H04W72/121 ,  H04W72/1273 ,  H04W72/1289

    摘要： A wireless communication base station is disclosed, configured to serve a plurality of user terminals in a series of downlink radio frames wherein user terminals in a first group are served in a first temporal region of the downlink radio frame and user terminals in a second group are served in the second temporal region of the downlink radio frame. A downlink radio frame contains an indicator signaling a change of duration of either of the first or second temporal region of at least one downlink radio frame in a series of downlink radio frames.

    摘要翻译： 公开了一种无线通信基站，其被配置为在一系列下行链路无线电帧中服务多个用户终端，其中第一组中的用户终端在下行链路无线电帧的第一时间区域中被服务，而第二组中的用户终端是 服务于下行链路无线电帧的第二时域。 下行链路无线电帧包含指示一系列下行链路无线电帧中的至少一个下行链路无线电帧的第一或第二时间区域中的任一个的持续时间变化的指示符。

    Apparatus and method for communicating and processing a reference signal based on an identifier associated with a base station
    10.
    发明授权
    Apparatus and method for communicating and processing a reference signal based on an identifier associated with a base station 有权
    用于基于与基站相关联的标识符来传送和处理参考信号的装置和方法

    公开(公告)号：US08396047B2

    公开(公告)日：2013-03-12

    申请号：US13040109

    申请日：2011-03-03

    申请人： Sandeep H. Krishnamurthy ,  Robert T. Love ,  Ajit Nimbalker ,  Kenneth A. Stewart ,  Xiangyang Zhuang

    发明人： Sandeep H. Krishnamurthy ,  Robert T. Love ,  Ajit Nimbalker ,  Kenneth A. Stewart ,  Xiangyang Zhuang

    IPC分类号： H04W40/00

    CPC分类号： H04L5/0053 ,  H04L5/0007 ,  H04L5/0091

    摘要： A wireless communication device receives at least a section of a subframe from a base station in a wireless communication system. The subframe includes transmission resources multiplexed onto subcarriers of orthogonal frequency division multiplexed (OFDM) symbols. A first set of OFDM symbols includes a reference signal and at least a second set of OFDM symbols includes information other than the reference signal (e.g., channel-coded data). The wireless device determines which OFDM symbols of the subframe constitute the first set of OFDM symbols based on an identifier associated with a base station that transmitted the subframe. The wireless device may then process the reference signal from the OFDM symbols that are determined to be the first set of OFDM symbols. The wireless device may also determine which OFDM symbols of the subframe constitute the second set of OFDM symbols and process non-reference signal information from OFDM symbols of the second set.

    摘要翻译： 无线通信设备从无线通信系统中的基站接收子帧的至少一部分。 子帧包括复用到正交频分复用（OFDM）符号的子载波上的传输资源。 第一组OFDM符号包括参考信号，并且至少第二组OFDM符号包括除参考信号之外的信息（例如，信道编码数据）。 无线设备基于与发送子帧的基站相关联的标识符来确定子帧的哪些OFDM符号构成第一组OFDM符号。 无线设备然后可以处理来自被确定为第一组OFDM符号的OFDM符号的参考信号。 无线设备还可以确定子帧的哪些OFDM符号构成第二组OFDM符号，并且从第二组的OFDM符号处理非参考信号信息。