利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

28 条记录 (耗时 0.026 秒)

    Spectrum allocation for base station
    11.
    发明授权
    Spectrum allocation for base station 有权
    基站频谱分配

    公开(公告)号：US08929933B2

    公开(公告)日：2015-01-06

    申请号：US13202297

    申请日：2011-05-04

    申请人： Kun Tan ,  Jiansong Zhang ,  Yongguang Zhang ,  Ranveer Chandra ,  Yong He ,  Thomas Moscibroda ,  Paramvir Bahl ,  Haichen Shen

    发明人： Kun Tan ,  Jiansong Zhang ,  Yongguang Zhang ,  Ranveer Chandra ,  Yong He ,  Thomas Moscibroda ,  Paramvir Bahl ,  Haichen Shen

    IPC分类号： H04B15/00 ,  H04W88/08 ,  H04L5/00 ,  H04W72/08 ,  H04W72/04 ,  H04W16/14 ,  H04L27/00

    CPC分类号： H04W72/0453 ,  H04L5/0005 ,  H04L5/0023 ,  H04L5/0064 ,  H04L5/0066 ,  H04L5/0092 ,  H04L5/14 ,  H04L27/0006 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/082 ,  H04W88/08

    摘要： Embodiments include processes, systems, and devices that allow a white space base station to request available frequency ranges for white space transmission in a local area. A white space finder service models a primary user device's transmission signal propagation area using terrain data associated with the local area of the primary user device. The white space finder service also determines, based on the location of the white space base station and the modeled propagation area, one or more locally available, non-interfering frequency ranges and provides them to the white space base station. The white space base station compares the provided frequency ranges to policies and selects one or more of the available frequencies that accommodate the policies. The white space base station also maps the transmission frequency ranges to virtual frequency ranges for transmission by a software-defined radio employing spectrum virtualization.

    摘要翻译： 实施例包括允许空白基站在局部区域中为空白传输请求可用频率范围的过程，系统和设备。 白色空间查找器服务使用与主用户设备的本地区域相关联的地形数据来建模主用户设备的传输信号传播区域。 白色空间查找器服务还基于白色空间基站的位置和建模的传播区域确定一个或多个本地可用的非干扰频率范围并将其提供给空白基站。 空白基站将提供的频率范围与策略进行比较，并选择适应策略的一个或多个可用频率。 白空间基站还将传输频率范围映射到虚拟频率范围，以便通过使用频谱虚拟化的软件定义无线电进行传输。

    Mapping a Transmission Stream in a Virtual Baseband to a Physical Baseband with Equalization
    12.
    发明申请
    Mapping a Transmission Stream in a Virtual Baseband to a Physical Baseband with Equalization 有权
    将虚拟基带中的传输流映射到具有均衡的物理基带

    公开(公告)号：US20130122949A1

    公开(公告)日：2013-05-16

    申请号：US13294093

    申请日：2011-11-10

    申请人： Yong He ,  Kun Tan ,  Haichen Shen ,  Jiansong Zhang ,  Yongguang Zhang

    发明人： Yong He ,  Kun Tan ,  Haichen Shen ,  Jiansong Zhang ,  Yongguang Zhang

    IPC分类号： H04W72/04 ,  H04B7/24 ,  H04B17/00

    CPC分类号： H04B7/24 ,  H04L5/0044 ,  H04L27/0006 ,  H04L27/2636 ,  H04W72/00 ,  Y02D70/00

    摘要： Embodiments include processes, systems, and devices for reshaping virtual baseband signals for transmission on non-contiguous and variable portions of a physical baseband, such as a white space frequency band. In the transmission path, a spectrum virtualization layer maps a plurality of transmission components associated with a transmission symbol produced by a physical layer protocol to sub-carriers of the allocated physical frequency band. The spectrum virtualization layer then outputs a physical transmission symbol composed of time-domain samples derived from the mapped frequency components and a cyclic prefix. In the receive path, a time-domain symbol received on the physical baseband is reshaped and equalized by the virtual spectrum layer in order to recompose a time-domain samples of a transmission stream in the virtual baseband.

    摘要翻译： 实施例包括用于重构虚拟基带信号以用于在诸如空白频带的物理基带的非连续和可变部分上传输的过程，系统和设备。 在传输路径中，频谱虚拟化层将与由物理层协议产生的传输符号相关联的多个传输组件映射到所分配的物理频带的子载波。 然后，频谱虚拟化层输出由映射的频率分量导出的时域样本和循环前缀组成的物理传输符号。 在接收路径中，在物理基带上接收​​的时域符号由虚拟频谱层重新整形和均衡，以便重构虚拟基带中的传输流的时域采样。

    Software-defined radio using multi-core processor
    14.
    发明授权
    Software-defined radio using multi-core processor 有权
    使用多核处理器的软件定义无线电

    公开(公告)号：US08565811B2

    公开(公告)日：2013-10-22

    申请号：US12535415

    申请日：2009-08-04

    申请人： Kun Tan ,  Jiansong Zhang ,  Yongguang Zhang

    发明人： Kun Tan ,  Jiansong Zhang ,  Yongguang Zhang

    IPC分类号： H04M1/00 ,  G06F13/00 ,  G06F7/38

    CPC分类号： G06F13/28

    摘要： A radio control board passes a plurality of digital samples between a memory of a computing device and a radio frequency (RF) transceiver coupled to a system bus of the computing device. Processing of the digital samples is carried out by one or more cores of a multi-core processor to implement a software-defined radio.

    摘要翻译： 无线电控制板在计算设备的存储器与耦合到计算设备的系统总线的射频（RF）收发器之间传递多个数字样本。 数字样本的处理由多核处理器的一个或多个核执行，以实现软件定义的无线电。

    In-frame acknowledgments and retransmissions
    15.
    发明授权
    In-frame acknowledgments and retransmissions 有权

    公开(公告)号：US09906333B2

    公开(公告)日：2018-02-27

    申请号：US13572912

    申请日：2012-08-13

    申请人： Jiansong Zhang ,  Kun Tan ,  Yongguang Zhang ,  Ranveer Chandra

    发明人： Jiansong Zhang ,  Kun Tan ,  Yongguang Zhang ,  Ranveer Chandra

    IPC分类号： H04L1/18

    CPC分类号： H04L1/1854 ,  H04L1/1887 ,  H04L1/1893

    摘要： Implementations for retransmitting erroneous portions within a transmission frame are described. A sender transmits a transmission frame and the receiver performs error detection on portions of the transmission frame in order to determine if any are received in error. The receiver sets up a feedback channel and transmits acknowledgements to the receiver to indicate that one or more portions have been received and to identify any portions that are received with errors. At least some of the acknowledgements are transmitted prior to receipt of the entire transmission frame. The sender retransmits any portions that are identified as being erroneous within the transmission frame.

    Spectrum Allocation for Base Station
    16.
    发明申请
    Spectrum Allocation for Base Station 有权
    基站频谱分配

    公开(公告)号：US20140051467A1

    公开(公告)日：2014-02-20

    申请号：US13202297

    申请日：2011-05-04

    申请人： Kun Tan ,  Jiansong Zhang ,  Yongguang Zhang ,  Ranveer Chandra ,  Yong He ,  Thomas Moscibroda ,  Paramvir Bahl ,  Haichen Shen

    发明人： Kun Tan ,  Jiansong Zhang ,  Yongguang Zhang ,  Ranveer Chandra ,  Yong He ,  Thomas Moscibroda ,  Paramvir Bahl ,  Haichen Shen

    IPC分类号： H04W72/08 ,  H04W72/04 ,  H04W88/08

    CPC分类号： H04W72/0453 ,  H04L5/0005 ,  H04L5/0023 ,  H04L5/0064 ,  H04L5/0066 ,  H04L5/0092 ,  H04L5/14 ,  H04L27/0006 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/082 ,  H04W88/08

    摘要： Embodiments include processes, systems, and devices that allow a white space base station to request available frequency ranges for white space transmission in a local area. A white space finder service models a primary user device's transmission signal propagation area using terrain data associated with the local area of the primary user device. The white space finder service also determines, based on the location of the white space base station and the modeled propagation area, one or more locally available, non-interfering frequency ranges and provides them to the white space base station. The white space base station compares the provided frequency ranges to policies and selects one or more of the available frequencies that accommodate the policies. The white space base station also maps the transmission frequency ranges to virtual frequency ranges for transmission by a software-defined radio employing spectrum virtualization.

    摘要翻译： 实施例包括允许空白基站在局部区域中为空白传输请求可用频率范围的过程，系统和设备。 白色空间查找器服务使用与主用户设备的本地区域相关联的地形数据来建模主用户设备的传输信号传播区域。 白色空间查找器服务还基于白色空间基站的位置和建模的传播区域确定一个或多个本地可用的非干扰频率范围并将其提供给空白基站。 空白基站将提供的频率范围与策略进行比较，并选择适应策略的一个或多个可用频率。 白空间基站还将传输频率范围映射到虚拟频率范围，以便通过使用频谱虚拟化的软件定义无线电进行传输。

    Mapping signals from a virtual frequency band to physical frequency bands
    18.
    发明授权
    Mapping signals from a virtual frequency band to physical frequency bands 有权
    将信号从虚拟频带映射到物理频带

    公开(公告)号：US09130711B2

    公开(公告)日：2015-09-08

    申请号：US13294039

    申请日：2011-11-10

    申请人： Yong He ,  Kun Tan ,  Haichen Shen ,  Jiansong Zhang ,  Yongguang Zhang

    发明人： Yong He ,  Kun Tan ,  Haichen Shen ,  Jiansong Zhang ,  Yongguang Zhang

    IPC分类号： H04L12/28 ,  H04L5/00 ,  H04L27/00 ,  H04L27/26 ,  H04J1/16

    CPC分类号： H04L5/0041 ,  H04L5/0044 ,  H04L27/0006 ,  H04L27/2636

    摘要： Embodiments include processes, systems, and devices for reshaping virtual baseband signals for transmission on non-contiguous and variable portions of a physical baseband, such as a white space frequency band. In the transmission path, a spectrum virtualization layer maps a plurality of frequency components derived from a transmission symbol produced by a physical layer protocol to sub-carriers of the allocated physical frequency band. The spectrum virtualization layer then outputs a time-domain signal derived from the mapped frequency components. In the receive path, a time-domain signal received on the physical baseband is reshaped by the virtual spectrum layer in order to recompose a time-domain symbol in the virtual baseband.

    摘要翻译： 实施例包括用于重构虚拟基带信号以用于在诸如空白频带的物理基带的非连续和可变部分上传输的过程，系统和设备。 在传输路径中，频谱虚拟化层将从由物理层协议产生的传输符号导出的多个频率分量映射到所分配的物理频带的子载波。 然后，频谱虚拟化层输出从映射的频率分量导出的时域信号。 在接收路径中，在物理基带上接收​​的时域信号由虚拟频谱层重新形成，以便重构虚拟基带中的时域符号。

    In-Frame Acknowledgments and Retransmissions
    19.
    发明申请
    In-Frame Acknowledgments and Retransmissions 有权
    框架内鸣谢和重传

    公开(公告)号：US20140044038A1

    公开(公告)日：2014-02-13

    申请号：US13572912

    申请日：2012-08-13

    申请人： Jiansong Zhang ,  Kun Tan ,  Yongguang Zhang ,  Ranveer Chandra

    发明人： Jiansong Zhang ,  Kun Tan ,  Yongguang Zhang ,  Ranveer Chandra

    IPC分类号： H04W4/00

    CPC分类号： H04L1/1854 ,  H04L1/1887 ,  H04L1/1893

    摘要： Implementations for retransmitting erroneous portions within a transmission frame are described. A sender transmits a transmission frame and the receiver performs error detection on portions of the transmission frame in order to determine if any are received in error. The receiver sets up a feedback channel and transmits acknowledgements to the receiver to indicate that one or more portions have been received and to identify any portions that are received with errors. At least some of the acknowledgements are transmitted prior to receipt of the entire transmission frame. The sender retransmits any portions that are identified as being erroneous within the transmission frame.

    摘要翻译： 描述用于在传输帧内重传错误部分的实现。 发送方发送传输帧，并且接收机对传输帧的部分执行错误检测，以便确定是否有错误。 接收机建立反馈信道并且向接收机发送确认以指示已经接收到一个或多个部分并且识别任何被错误接收的部分。 在接收到整个传输帧之前至少发送一些确认。 发送方重传发送帧内被识别为错误的任何部分。