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28 条记录 (耗时 0.029 秒)

    Channel control based on error correction values
    21.
    发明授权
    Channel control based on error correction values 有权
    基于纠错值的通道控制

    公开(公告)号：US09112645B2

    公开(公告)日：2015-08-18

    申请号：US11801785

    申请日：2007-05-11

    申请人： Amer A. Hassan ,  Bernard D. Aboba ,  Kun Tan ,  Jiansong Zhang

    发明人： Amer A. Hassan ,  Bernard D. Aboba ,  Kun Tan ,  Jiansong Zhang

    IPC分类号： G06F11/00 ,  H04L1/00 ,  H04L1/20

    CPC分类号： H04L1/002 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/203

    摘要： A computing device configured for wireless communication may effectively control adaptation to channel conditions. The device may be configured to identify and classify conditions impacting performance of a channel so that appropriate adaptations may be made. Interference may be detected by correlating received signal strength and packet errors. High received signal strength correlated to a high packet error rate may signify presence of a source of interference. Once a source of interference is detected, other criteria may be used to determine the nature of the interference so that an adaptation that is minimally disruptive of applications can be selected. Additionally, channel degradation may be predicted by monitoring trends in error rates, including Forward Error Correction rates, and adaptation may be used before packet error rates exceed an unacceptable level.

    摘要翻译： 配置用于无线通信的计算设备可以有效地控制对信道条件的适配。 该设备可以被配置为识别和分类影响信道性能的条件，以便进行适当的调整。 可以通过将接收的信号强度和分组错误相关联来检测干扰。 与高分组错误率相关的高接收信号强度可能意味着存在干扰源。 一旦检测到干扰源，可以使用其他标准来确定干扰的性质，从而可以选择最小程度地破坏应用的适配。 另外，可以通过监视错误率的趋势（包括前向纠错率）来预测信道恶化，并且可以在分组错误率超过不可接受的水平之前使用适配。

    In-Frame Acknowledgments and Retransmissions
    22.
    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。

    Mapping Signals from a Virtual Frequency Band to Physical Frequency Bands
    24.
    发明申请
    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：US20130121257A1

    公开(公告)日：2013-05-16

    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： H04W72/04

    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。

    Interference detection
    25.
    发明授权
    Interference detection 有权
    干扰检测

    公开(公告)号：US08295189B2

    公开(公告)日：2012-10-23

    申请号：US11801803

    申请日：2007-05-11

    申请人： Amer A. Hassan ,  Bernard D. Aboba ,  Jiansong Zhang ,  Kun Tan

    发明人： Amer A. Hassan ,  Bernard D. Aboba ,  Jiansong Zhang ,  Kun Tan

    IPC分类号： H04J1/16

    CPC分类号： H04L1/20 ,  H04L1/0002 ,  H04L1/0019

    摘要： A computing device configured for wireless communication may effectively control adaptation to channel conditions. The device may be configured to identify and classify conditions impacting performance of a channel so that appropriate adaptations may be made. Interference may be detected by correlating received signal strength and packet errors. High received signal strength correlated to a high packet error rate may signify presence of a source of interference. Once a source of interference is detected, other criteria may be used to determine the nature of the interference so that an adaptation that is minimally disruptive of applications can be selected. Additionally, channel degradation may be predicted by monitoring trends in error rates, including Forward Error Correction rates, and adaptation may be used before packet error rates exceed an unacceptable level.

    摘要翻译： 配置用于无线通信的计算设备可以有效地控制对信道条件的适配。 该设备可以被配置为识别和分类影响信道性能的条件，以便进行适当的调整。 可以通过将接收的信号强度和分组错误相关联来检测干扰。 与高分组错误率相关的高接收信号强度可能意味着存在干扰源。 一旦检测到干扰源，可以使用其他标准来确定干扰的性质，从而可以选择最小程度地破坏应用的适配。 另外，可以通过监视错误率的趋势（包括前向纠错率）来预测信道恶化，并且可以在分组错误率超过不可接受的水平之前使用适配。

    Software-Defined Radio Using Multi-Core Processor
    27.
    发明申请
    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：US20110035522A1

    公开(公告)日：2011-02-10

    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： G06F13/00 ,  H04L27/00 ,  G06F12/00

    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 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进行，以实现软件定义的无线电。

    Interference detection
    28.
    发明申请
    Interference detection 有权
    干扰检测

    公开(公告)号：US20080279093A1

    公开(公告)日：2008-11-13

    申请号：US11801803

    申请日：2007-05-11

    申请人： Amer A. Hassan ,  Bernard D. Aboba ,  Jiansong Zhang ,  Kun Tan

    发明人： Amer A. Hassan ,  Bernard D. Aboba ,  Jiansong Zhang ,  Kun Tan

    IPC分类号： G06F11/00

    CPC分类号： H04L1/20 ,  H04L1/0002 ,  H04L1/0019

    摘要： A computing device configured for wireless communication may effectively control adaptation to channel conditions. The device may be configured to identify and classify conditions impacting performance of a channel so that appropriate adaptations may be made. Interference may be detected by correlating received signal strength and packet errors. High received signal strength correlated to a high packet error rate may signify presence of a source of interference. Once a source of interference is detected, other criteria may be used to determine the nature of the interference so that an adaptation that is minimally disruptive of applications can be selected. Additionally, channel degradation may be predicted by monitoring trends in error rates, including Forward Error Correction rates, and adaptation may be used before packet error rates exceed an unacceptable level.

    摘要翻译： 配置用于无线通信的计算设备可以有效地控制对信道条件的适配。 该设备可以被配置为识别和分类影响信道性能的条件，以便进行适当的调整。 可以通过将接收的信号强度和分组错误相关联来检测干扰。 与高分组错误率相关的高接收信号强度可能意味着存在干扰源。 一旦检测到干扰源，可以使用其他标准来确定干扰的性质，从而可以选择最小程度地破坏应用的适配。 另外，可以通过监视错误率的趋势（包括前向纠错率）来预测信道恶化，并且可以在分组错误率超过不可接受的水平之前使用适配。