公开(公告)号：US07729204B2

公开(公告)日：2010-06-01

申请号：US11868515

申请日：2007-10-07

申请人： Chunyi Peng ,  Guobin Shen ,  Kun Tan ,  Yongguang Zhang

发明人： Chunyi Peng ,  Guobin Shen ,  Kun Tan ,  Yongguang Zhang

IPC分类号： G01S3/80

CPC分类号： G01S15/74

摘要： Acoustic ranging may involve determining a distance between a first device and at least one other device using one or more acoustic signals. In an example embodiment, a first device emits a first acoustic signal and then receives the first acoustic signal at a first time. The first device also receives a second acoustic signal at a second time, with the second acoustic signal having been emitted by a second device. The first device ascertains a first value that reflects a difference between the first time and the second time. Responsive to at least the ascertained first value, the first device determines a distance between the first device and the second device.

摘要翻译： 声学测距可以涉及使用一个或多个声学信号确定第一设备和至少一个其他设备之间的距离。 在示例性实施例中，第一设备发射第一声信号，然后在第一时间接收第一声信号。 第一装置还在第二时间接收第二声信号，第二声信号已被第二装置发射​​。 第一设备确定反映第一时间和第二时间之间的差异的第一值。 响应于至少所确定的第一值，第一设备确定第一设备和第二设备之间的距离。

公开(公告)号：US07720086B2

公开(公告)日：2010-05-18

申请号：US11687951

申请日：2007-03-19

申请人： Haitao Wu ,  Kun Tan ,  Jun Zhao ,  Yongguang Zhang

发明人： Haitao Wu ,  Kun Tan ,  Jun Zhao ,  Yongguang Zhang

IPC分类号： H04J4/00

CPC分类号： H04W72/02 ,  H04W72/085 ,  H04W84/18

摘要： Systems and methods for distributed overlay multi-channel MAC for wireless ad hoc networks are described. In one aspect, the systems and methods divide channel frequencies defined by a wireless network protocol into a single home channel and multiple guest channels that are orthogonal to the home channel. Each of the network nodes in the ad hoc network operates on the home channel for respective variable and overlapping amounts of time to maintain network connectivity with other respective network nodes. Additionally, each of the network nodes determines whether and when to switch from the home channel to a particular guest channel of the guest channels for a variable amount of time to increase data throughput over one or more corresponding communication links in the ad hoc network with other network node(s).

摘要翻译： 描述了用于无线自组织网络的分布式覆盖多信道MAC的系统和方法。 在一个方面，系统和方法将由无线网络协议定义的信道频率划分成单个归属信道和与归属信道正交的多个客户信道。 ad hoc网络中的每个网络节点在归属信道上操作相应的可变和重叠的时间量，以维持与其他各个网络节点的网络连接。 另外，每个网络节点确定是否以及何时何时从客户信道切换到客户信道的特定客体信道一段可变的时间量，以增加具有其他的自组织网络中的一个或多个对应的通信链路上的数据吞吐量 网络节点。

公开(公告)号：US20090210519A1

公开(公告)日：2009-08-20

申请号：US12032975

申请日：2008-02-18

申请人： Brian Don Zill ,  David Garfield Thaler, III ,  Parveen K. Patel ,  Rebecca Isaacs ,  Yongguang Zhang

发明人： Brian Don Zill ,  David Garfield Thaler, III ,  Parveen K. Patel ,  Rebecca Isaacs ,  Yongguang Zhang

IPC分类号： G06F15/177

CPC分类号： H04L12/12 ,  H04L63/20 ,  Y02D50/20 ,  Y02D50/40

摘要： Systems and methods that facilitate remote wake up are described that provide for efficient and transparent wake up of target hosts by remote hosts. In various embodiments, a separate address can be used by a target host for wake up network traffic, which is different from a regular address associated with a target host for normal network communications. In addition, the disclosed subject matter facilitates controlling wake up operations according to trust, identity, and/or a wake up policy.

摘要翻译： 描述了促进远程唤醒的系统和方法，其提供远程主机对目标主机的高效和透明的唤醒。 在各种实施例中，目标主机可以使用单独的地址来唤醒网络流量，其不同于用于正常网络通信的与目标主机相关联的常规地址。 此外，所公开的主题有助于根据信任，身份和/或唤醒策略来控制唤醒操作。

公开(公告)号：US20080304361A1

公开(公告)日：2008-12-11

申请号：US11868515

申请日：2007-10-07

申请人： Chunyi Peng ,  Guobin Shen ,  Kun Tan ,  Yongguang Zhang

发明人： Chunyi Peng ,  Guobin Shen ,  Kun Tan ,  Yongguang Zhang

IPC分类号： G01S3/80

CPC分类号： G01S15/74

摘要： Acoustic ranging may involve determining a distance between a first device and at least one other device using one or more acoustic signals. In an example embodiment, a first device emits a first acoustic signal and then receives the first acoustic signal at a first time. The first device also receives a second acoustic signal at a second time, with the second acoustic signal having been emitted by a second device. The first device ascertains a first value that reflects a difference between the first time and the second time. Responsive to at least the ascertained first value, the first device determines a distance between the first device and the second device.

摘要翻译： 声学测距可以涉及使用一个或多个声学信号确定第一设备和至少一个其他设备之间的距离。 在示例性实施例中，第一设备发射第一声信号，然后在第一时间接收第一声信号。 第一装置还在第二时间接收第二声信号，第二声信号已被第二装置发射​​。 第一设备确定反映第一时间和第二时间之间的差异的第一值。 响应于至少所确定的第一值，第一设备确定第一设备和第二设备之间的距离。

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。

公开(公告)号：US20140241157A1

公开(公告)日：2014-08-28

申请号：US13571010

申请日：2012-08-09

申请人： Kun Tan ,  Wenjun Hu ,  Guohan Lv ,  Yongguang Zhang

发明人： Kun Tan ,  Wenjun Hu ,  Guohan Lv ,  Yongguang Zhang

IPC分类号： H04W28/08 ,  H04W88/08 ,  H04W56/00 ,  H04L5/00

CPC分类号： H04W28/08 ,  H04J3/0638 ,  H04J3/0661 ,  H04L5/0037 ,  H04W56/00 ,  H04W88/08 ,  H04W88/085

摘要： An extended wireless access point may have many distributed radio units connected to associated processing units via a radio transmission network comprising commodity switches controlled by one or more network controllers. The one or more network controllers may use a load balancing algorithm to select a processing unit to process a signal received by a distributed radio unit. The radio units may receive a wireless signal, and generate compressed samples of the wireless signal for transport via the radio transmission network and processing by a selected processing unit. Similarly, a processing unit may generate and transmit via the radio transmission network compressed samples for decompression and transmission by a radio unit.

摘要翻译： 扩展无线接入点可以具有许多分布式无线电单元，其经由包括由一个或多个网络控制器控制的商业交换机的无线电传输网络连接到相关处理单元。 一个或多个网络控制器可以使用负载平衡算法来选择处理单元来处理由分布式无线电单元接收的信号。 无线电单元可以接收无线信号，并生成无线信号的压缩样本，用于经由无线电传输网络传输和由选定的处理单元进行处理。 类似地，处理单元可以经由无线电传输网络生成并发送压缩样本以进行解压缩和由无线电单元传输。

公开(公告)号：US08800002B2

公开(公告)日：2014-08-05

申请号：US12032958

申请日：2008-02-18

申请人： Brian Don Zill ,  David Garfield Thaler, III ,  Parveen K. Patel ,  Rebecca Isaacs ,  Yongguang Zhang

发明人： Brian Don Zill ,  David Garfield Thaler, III ,  Parveen K. Patel ,  Rebecca Isaacs ,  Yongguang Zhang

IPC分类号： H04L29/06

CPC分类号： H04L63/20 ,  H04L63/0227

摘要： Systems and methods that facilitate inter-process networking are described that can provide inter-process communication, firewall restrictions, process and host mobility, as well as parallelization of task performance. In various embodiments, a computer process can be provided with its own internet protocol address and network stack to facilitate inter-process networking. In further embodiments, a gateway process can facilitate process mobility, host mobility, and parallelization of task performance, as well as management of a host area network by facilitating inter-process communication between suitably configured processes.

摘要翻译： 描述了促进进程间联网的系统和方法，其可以提供进程间通信，防火墙限制，进程和主机移动性以及任务性能的并行化。 在各种实施例中，可以向计算机进程提供其自己的互联网协议地址和网络堆栈以便于进程间联网。 在进一步的实施例中，网关进程可以通过促进适当配置的进程之间的进程间通信来促进进程移动性，主机移动性以及任务性能的并行化，以及主机区域网络的管理。

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。

公开(公告)号：US08627189B2

公开(公告)日：2014-01-07

申请号：US12630774

申请日：2009-12-03

申请人： Kun Tan ,  Jiansong Zhang ,  Yongguang Zhang ,  He Liu

发明人： Kun Tan ,  Jiansong Zhang ,  Yongguang Zhang ,  He Liu

IPC分类号： G06F11/00

CPC分类号： H04L1/0054 ,  H03M13/23 ,  H03M13/41 ,  H03M13/4169 ,  H03M13/6527 ,  H04B1/0039 ,  H04L1/0043 ,  H04L1/0052 ,  H04L1/0066 ,  H04L1/1607 ,  H04L1/1829

摘要： An extensive use of look-up table (LUT) and single instruction multiple data (SIMD) in different algorithms in a software-defined radio (SDR) system is described. In particular, the LUT is used during spreading modulation, mapping and spreading, scrambling, de-scrambling, soft demapping, and the like. The SIMD is executed by a multi-core processor during implementation of a “min” operation to find an optimal path in a Trellis diagram for a Viterbi decoder.

摘要翻译： 描述了在软件定义无线电（SDR）系统中在不同算法中广泛使用查找表（LUT）和单指令多数据（SIMD）。 特别地，LUT在扩展调制，映射和扩展，加扰，去加扰，软解映射等期间被使用。 在执行“最小”操作期间，SIMD由多核处理器执行以在维特比解码器的网格图中找到最佳路径。

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。