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公开(公告)号：US09753884B2
公开(公告)日：2017-09-05
申请号：US12571188
申请日：2009-09-30
申请人： Kun Tan , Jiansong Zhang , Yongguang Zhang
发明人： Kun Tan , Jiansong Zhang , Yongguang Zhang
CPC分类号： G06F13/4273 , G06F13/38 , G06F13/40 , H04B1/0007
摘要： A radio control board exchanges data with a radio frequency (RF) front end using a messaging protocol over an interface that includes separate data and control channels. Training data can also be passed over the interface for tuning the clock phase.
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公开(公告)号：US20110136439A1
公开(公告)日：2011-06-09
申请号：US12631548
申请日：2009-12-04
申请人： Kun Tan , Jiansong Zhang , Yongguang Zhang
发明人： Kun Tan , Jiansong Zhang , Yongguang Zhang
CPC分类号： H04W24/08
摘要： An analysis application is adapted to be executed on a computing device for collecting data for analysis from a software-defined radio implemented on the same computing device or on a separate computing device for testing measurement and analysis of wireless standards, radio configurations, communication protocols and other radio technologies.
摘要翻译： 分析应用适于在计算设备上执行，用于从在相同的计算设备上实现的软件定义的无线电收集数据或者在用于测试无线标准，无线电配置，通信协议的测量和分析的单独的计算设备上收集用于分析的数据， 其他无线电技术。
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公开(公告)号：US09077492B2
公开(公告)日：2015-07-07
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
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.
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公开(公告)号：US08660056B2
公开(公告)日：2014-02-25
申请号：US12952063
申请日：2010-11-22
申请人： Kun Tan , Jiansong Zhang , Yongguang Zhang , Ji-hoon Ryoo , Ji Fang
发明人： Kun Tan , Jiansong Zhang , Yongguang Zhang , Ji-hoon Ryoo , Ji Fang
CPC分类号： H04B7/15521 , H04B7/14 , H04B7/15 , H04B7/15528 , H04B7/15592
摘要： Techniques and systems that improve throughput between a pair of nodes by using two multi-hop paths of one-way flows regardless of the one-way flows interfering with each other are described herein. These techniques enable nearly full-rate data flow through frame transmissions, even though these frame transmissions can interfere with substantially concurrent relay transmissions. In some implementations, relays on the two paths forward mixed frame signals to the next hop without trying to decode the mixed frame signals of interfered frames. The destination successfully recovers the useful information from the mixed frame signals by canceling out interference based on previously received frames.
摘要翻译： 这里描述了通过使用单向流的两个多跳路径来改善一对节点之间的吞吐量的技术和系统，而不管彼此干扰的单向流。 即使这些帧传输可能干扰基本上并发的中继传输，这些技术使得能够通过帧传输几乎全速率数据流。 在一些实施方式中，两个路径上的中继器将混合帧信号转发到下一跳，而不尝试对被干扰帧的混合帧信号进行解码。 目的地通过基于先前接收到的帧来消除干扰，从混合帧信号成功地恢复有用信息。
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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
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。
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公开(公告)号：US20110317633A1
公开(公告)日：2011-12-29
申请号：US12824104
申请日：2010-06-25
申请人： Kun Tan , Jiansong Zhang , Yongguang Zhang , Ji Fang
发明人： Kun Tan , Jiansong Zhang , Yongguang Zhang , Ji Fang
IPC分类号： H04W74/00
CPC分类号： H04W74/08 , H04L27/2607 , H04W72/00 , H04W72/044 , H04W84/12
摘要： A fine-grained channel access system and method to facilitate fine-grained channel access in a high-data rate wide-band wireless local-area network (WLAN). Embodiments of the system and method divide an entire wireless channel into proper size subchannels commensurate with the physical layer data rate and typical frame size. Once the subchannels are defined, each node on the WLAN contends independently for each of the fine-grained subchannels. A first orthogonal frequency-division multiplexing (OFDM) technique is used to signal an access point on the WLAN that the node desires one or more of the subchannels. A second OFDM technique (which is different from the first OFDM technique) is used for data transmission. Sometimes there is contention between nodes that want the same subchannel. The access point resolves any contention between the nodes using a frequency domain contention technique that includes a frequency domain backoff technique.
摘要翻译： 一种细粒度的信道接入系统和方法，用于在高数据速率宽带无线局域网（WLAN）中促进细粒度信道接入。 系统和方法的实施例将整个无线信道划分成与物理层数据速率和典型帧大小相称的适当尺寸的子信道。 一旦定义了子信道，WLAN上的每个节点独立地针对每个细粒度子信道进行竞争。 第一正交频分复用（OFDM）技术用于向WLAN上的接入点发信号通知节点希望一个或多个子信道。 第二OFDM技术（其与第一OFDM技术不同）用于数据传输。 有时在需要相同子通道的节点之间存在竞争。 接入点使用包括频域退避技术的频域争用技术来解决节点之间的任何争用。
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7.发明授权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：US08989286B2
公开(公告)日：2015-03-24
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
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。
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8.发明授权公开(公告)号：US08948282B2
公开(公告)日：2015-02-03
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
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.
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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
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。
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10.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
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。
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