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    Cost-aware networking over heterogeneous data channels
    81.
    发明申请
    Cost-aware networking over heterogeneous data channels 失效
    异构数据通道的成本感知网络

    公开(公告)号：US20070171915A1

    公开(公告)日：2007-07-26

    申请号：US11342147

    申请日：2006-01-26

    申请人： Kentaro Toyama ,  Rohan Murty ,  Chandramohan Thekkath ,  Ranveer Chandra

    发明人： Kentaro Toyama ,  Rohan Murty ,  Chandramohan Thekkath ,  Ranveer Chandra

    IPC分类号： H04L12/56

    CPC分类号： H04L47/762 ,  H04L47/15 ,  H04L47/70 ,  H04L47/788 ,  H04L47/826

    摘要： Disclosed herein are scheduling techniques for transmitting time-critical data in a cost-aware manner over a network comprising a plurality of heterogeneous transmission interfaces. The scheduling problem is formulated as a linear programming problem with the deliver-by deadlines of the various data blocks as hard constraints and minimizing cost set as an objective (soft) constraint. The problem is simplified by assuming data blocks with the earliest deadlines should be scheduled first and the most aggressive interfaces should be used first. To formulate the linear programming problem, the time domain is divided into bins and various bin-level schedules are enumerated for switching the transmission of the data over various transmission interfaces. The linear programming techniques are applied to the various bin configurations and the least costly of the resulting transmission schedule is selected for submission to a switching layer.

    摘要翻译： 这里公开了用于通过包括多个异构传输接口的网络以成本感知方式传送时间关键数据的调度技术。 调度问题被形成为作为硬约束的各种数据块的交付期限的线性规划问题，并且将成本设定为目标（软）约束的最小化。 通过假设最早的最后期限的数据块应该首先被调度并且应该首先使用最积极的接口来简化问题。 为了制定线性规划问题，将时域划分成箱体，并列举各种二进制计划，用于切换各种传输接口上的数据传输。 线性编程技术被应用于各种箱体配置，并且选择最终的传输调度成本最低以提交给切换层。

    In-frame acknowledgments and retransmissions
    82.
    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.

    Coexistence of white space devices and wireless narrowband devices
    84.
    发明授权
    Coexistence of white space devices and wireless narrowband devices 有权
    白色空间设备和无线窄带设备的共存

    公开(公告)号：US09332439B2

    公开(公告)日：2016-05-03

    申请号：US12962676

    申请日：2010-12-08

    申请人： Ranveer Chandra ,  Thomas Moscibroda ,  George Nychis ,  Ivan Tashev ,  Paramvir Bahl

    发明人： Ranveer Chandra ,  Thomas Moscibroda ,  George Nychis ,  Ivan Tashev ,  Paramvir Bahl

    IPC分类号： H04B1/04 ,  H04W16/14 ,  H04W52/50

    CPC分类号： H04W16/14 ,  H04R2410/00 ,  H04R2420/07 ,  H04W52/50

    摘要： Architecture that enables wireless narrowband devices (e.g., wireless microphones) and white space devices to efficiently coexist on the same telecommunications channels, while not interfering with the usability of the wireless narrowband device. The architecture provides interference detection, strobe generation and detection and, power ramping and suppression (interference-free coexistence with spectrum efficiency). The architecture provides the ability of the white space device to learn about the presence of the microphone. This can be accomplished i using a geolocation database, reactively via a strober device, and/or proactively via the strober device. The strober device can be positioned close to the microphone receiver and signals the presence of a microphone to white space devices on demand. The strober device takes into consideration the microphone's characteristics as well as the relative signal strength from the microphone transmitter versus the white space device, in order to enable maximum use of the available white space spectrum.

    摘要翻译： 能够使无线窄带设备（例如，无线麦克风）和空白设备在相同的电信信道上有效共存的架构，同时不干扰无线窄带设备的可用性。 该架构提供干扰检测，选通产生和检测以及功率斜坡抑制（与频谱效率无干扰共存）。 该架构提供了白空间设备了解麦克风的存在的能力。 这可以通过使用地理位置数据库，通过选通设备反应地和/或主动地通过选通设备来实现。 选通设备可以靠近麦克风接收器定位，并根据需要将麦克风存在于空白设备。 选通器件考虑到麦克风的特性以及麦克风发射器与白色空间器件的相对信号强度，以便最大限度地利用可用的空白光谱。

    Transmitting data in a wireless white space network
    87.
    发明授权
    Transmitting data in a wireless white space network 有权
    在无线空白网络中传输数据

    公开(公告)号：US09094837B2

    公开(公告)日：2015-07-28

    申请号：US12796683

    申请日：2010-06-09

    申请人： Ranveer Chandra ,  Thomas Moscibroda ,  Xiaohui Wang

    发明人： Ranveer Chandra ,  Thomas Moscibroda ,  Xiaohui Wang

    IPC分类号： H04B15/00 ,  H04W24/00 ,  H04W72/00

    CPC分类号： H04W24/00 ,  H04B2201/692 ,  H04J11/0056 ,  H04L5/0007 ,  H04L27/0006 ,  H04W72/00 ,  H04W72/0453 ,  H04W72/048

    摘要： There is provided a computer-implemented method for transmitting data over a wireless network using white spaces. A first white space transmission channel is determined for communicating with mobile client devices. Wireless communication takes place with the mobile client devices over the first white space transmission channel. If the first white space transmission channel becomes unavailable to one of the mobile client devices because of the presence of a primary user on the first white space transmission channel, a different white space transmission channel is determined for communicating with the mobile client device that is affected. The first white space transmission channel may become unavailable to the affected mobile client device, for example, because a primary user begins using the first white space transmission channel in proximity to the affected device. The primary user may be a wireless microphone. Thereafter, communication with the affected wireless device takes place on the different white space transmission channel, while unaffected devices continue to communicate on the first white space transmission channel. Also provided are an exemplary wireless base station and an exemplary mobile client device.

    摘要翻译： 提供了一种用于通过无线网络使用空格来发送数据的计算机实现的方法。 确定用于与移动客户端设备通信的第一空白传输信道。 移动客户端设备通过第一个空白传输信道进行无线通信。 如果第一空白传输信道由于第一空白传输信道上的主用户的存在而变得不能用于移动客户端设备之一，则确定不同的空白传输信道用于与受影响的移动客户端设备进行通信 。 受影响的移动客户端设备的第一个空白传输信道可能变得不可用，例如，因为主用户开始在受影响的设备附近使用第一个空白传输信道。 主要用户可以是无线麦克风。 此后，与受影响的无线设备的通信发生在不同的空白传输信道上，而未受影响的设备在第一空白传输信道上继续通信。 还提供了示例性无线基站和示例性移动客户端设备。

    Peer and composite localization for mobile applications
    88.
    发明授权
    Peer and composite localization for mobile applications 有权
    移动应用程序的同步和复合本地化

    公开(公告)号：US08812013B2

    公开(公告)日：2014-08-19

    申请号：US12395386

    申请日：2009-02-27

    申请人： Sharad Agarwal ,  Paramvir Bahl ,  Nilanjan Banerjee ,  Ranveer Chandra ,  Alastair Wolman

    发明人： Sharad Agarwal ,  Paramvir Bahl ,  Nilanjan Banerjee ,  Ranveer Chandra ,  Alastair Wolman

    IPC分类号： H04W24/00 ,  H04M11/04 ,  H04B1/38 ,  H04B1/04

    CPC分类号： H04W64/00 ,  G01S5/0263 ,  G01S5/0289 ,  G01S19/48

    摘要： A system and method for peer based localization system using radio technology, such as Bluetooth or Wi-Fi ad-hoc technology that enables mobile devices such as cell phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, etc. to discover their physical location relative to one another. In addition, the peer based localization can use a plurality of radio technologies to increase the accuracy of the physical location estimates. Additionally or alternatively, the peer based localization technique can be combined with infrastructure based location techniques, such as triangulation, GPS, or infrastructure based Wi-Fi localization in order to transpose virtual coordinates into physical coordinates.

    摘要翻译： 一种使用无线电技术的基于对等的定位系统的系统和方法，例如蓝牙或Wi-Fi专用技术，其使移动设备例如蜂窝电话，智能电话，膝上型计算机，手持通信设备，手持计算设备，卫星无线电，全球 定位系统，PDA等，以发现它们相对于彼此的物理位置。 此外，基于对等的定位可以使用多个无线电技术来增加物理位置估计的准确性。 另外或替代地，基于对等的定位技术可以与基于基础设施的定位技术组合，例如三角测量，GPS或基于Wi-Fi的基础设施定位，以便将虚拟坐标转换成物理坐标。

    Spectrum assignment for networks over white spaces and other portions of the spectrum
    89.
    发明授权
    Spectrum assignment for networks over white spaces and other portions of the spectrum 有权
    在白色空间和频谱的其他部分的网络的频谱分配

    公开(公告)号：US08811903B2

    公开(公告)日：2014-08-19

    申请号：US12473963

    申请日：2009-05-28

    申请人： Ranveer Chandra ,  Thomas Moscibroda ,  Rohan N. Murty ,  Paramvir Bahl

    发明人： Ranveer Chandra ,  Thomas Moscibroda ,  Rohan N. Murty ,  Paramvir Bahl

    IPC分类号： H04B15/00

    CPC分类号： H04W72/02 ,  H04W16/14 ,  H04W24/08 ,  H04W72/1226

    摘要： Functionality is described by selecting a channel in an environment in which non-privileged entities have subordinate access rights to spectrum compared to privileged entities. The functionality operates by identifying spectrum that is available to all nodes involved in communication (where the nodes are associated with non-privileged entities). The functionality then generates a suitability assessment for each candidate channel within the available spectrum. The functionality selects a channel having the most desirable suitability assessment. The functionality can form a suitability assessment for a candidate channel of arbitrary width, e.g., by combining suitability assessments associated with constituent spectrum units within the candidate channel.

    摘要翻译： 通过在非特权实体具有与特权实体相比具有次要访问权限的环境中选择一个通道来描述功能。 该功能通过识别对于通信中涉及的所有节点（其中节点与非特权实体相关联）可用的频谱进行识别。 然后，该功能为可用频谱内的每个候选信道生成适合性评估。 功能选择具有最理想的适用性评估的通道。 功能可以形成对任意宽度的候选信道的适用性评估，例如通过组合与候选信道内的组成频谱单元相关联的适用性评估。