-
公开(公告)号：US20080244707A1
公开(公告)日：2008-10-02
申请号：US11691041
申请日：2007-03-26
IPC分类号： G06F7/04
CPC分类号： H04L63/1441 , H04W12/12 , H04W84/10 , H04W88/08
摘要： An apparatus, a method, and logic encoded in computer readable media that when executed operable to carry out the method. The method includes wirelessly receiving at a receiving station a signal transmitted from a transmitting station in a wireless network. The signal includes a network identifier, e.g., MAC address of the transmitting station. The method includes determining one or more RF waveform characteristics of at least a transient part of the received signal, decoding the received signal to determine the network identifier, e.g., MAC address, determining one or more behavior characteristics from the received signal; and using the decoded network identifier, e.g., MAC address and a combination of the one or more waveform characteristics and the one or more behavior characteristics to ascertain whether or not the network identifier, e.g., MAC address is a spoofed identifier, the ascertaining using historical samples of combinations for different network identifiers.
摘要翻译： 一种在计算机可读介质中编码的装置，方法和逻辑，当被执行时可执行该方法。 该方法包括在接收站处无线地接收从无线网络中的发射台发送的信号。 信号包括网络标识符，例如发送站的MAC地址。 该方法包括确定接收信号的至少暂时部分的一个或多个RF波形特性，对接收到的信号进行解码以确定网络标识符，例如MAC地址，从接收到的信号确定一个或多个行为特征; 并且使用解码的网络标识符，例如MAC地址以及一个或多个波形特征和一个或多个行为特征的组合来确定网络标识符（例如MAC地址是否是欺骗的标识符），使用历史的确定 不同网络标识符的组合样本。
-
公开(公告)号：US08018883B2
公开(公告)日：2011-09-13
申请号：US11691041
申请日：2007-03-26
CPC分类号： H04L63/1441 , H04W12/12 , H04W84/10 , H04W88/08
摘要： An apparatus, a method, and logic encoded in computer readable media that when executed operable to carry out the method. The method includes wirelessly receiving at a receiving station a signal transmitted from a transmitting station in a wireless network. The signal includes a network identifier, e.g., MAC address of the transmitting station. The method includes determining one or more RF waveform characteristics of at least a transient part of the received signal, decoding the received signal to determine the network identifier, e.g., MAC address, determining one or more behavior characteristics from the received signal; and using the decoded network identifier, e.g., MAC address and a combination of the one or more waveform characteristics and the one or more behavior characteristics to ascertain whether or not the network identifier, e.g., MAC address is a spoofed identifier, the ascertaining using historical samples of combinations for different network identifiers.
摘要翻译： 一种在计算机可读介质中编码的装置，方法和逻辑，当被执行时可执行该方法。 该方法包括在接收站处无线地接收从无线网络中的发射台发送的信号。 信号包括网络标识符，例如发送站的MAC地址。 该方法包括确定接收信号的至少暂时部分的一个或多个RF波形特性，对接收到的信号进行解码以确定网络标识符，例如MAC地址，从接收到的信号确定一个或多个行为特征; 并且使用解码的网络标识符，例如MAC地址以及一个或多个波形特征和一个或多个行为特征的组合来确定网络标识符（例如，MAC地址是否是欺骗的标识符），使用历史的确定 不同网络标识符的组合样本。
-
3.发明授权Inserting time of departure information in frames to support multi-channel location techniques 有权以帧格式插入出发时间信息，以支持多频道定位技术公开(公告)号：US08335173B2
公开(公告)日：2012-12-18
申请号：US12168250
申请日：2008-07-07
申请人： Brian Donald Hart , Paul J. Stager , Allan Thomson
发明人： Brian Donald Hart , Paul J. Stager , Allan Thomson
IPC分类号： H04B7/00
CPC分类号： G01S5/0226
摘要： A device whose location is to be determined (target device) generates a plurality of frames (messages) and time of departure (TOD) timestamp information indicating when the target device transmits the plurality of frames in a sequence or burst. The target device transmits the plurality of frames and the TOD information, wherein the plurality of frames are transmitted such that at least two of the frames are on different radio frequency (RF) channels. Within a sequence or burst (or across multiple sequences or bursts), multiple widely spaced transmissions on the same channel are included to allow for estimation of the crystal frequency offset of the transmitting device. The TOD information included in the transmitted packets allows devices that receive the packets not to change their channels of operation solely for the purpose of receiving packets from the device to be located.
摘要翻译： 要确定其位置的设备（目标设备）产生指示目标设备何时以序列或突发方式发送多个帧的多个帧（消息）和出发时间（TOD）时间戳信息。 目标设备发送多个帧和TOD信息，其中发送多个帧，使得至少两个帧在不同的射频（RF）信道上。 在序列或突发（或跨多个序列或突发）中，包括相同信道上的多个宽间隔的传输以允许估计发射设备的晶体频率偏移。 包含在所发送的分组中的TOD信息允许接收分组的设备不改变其操作信道，仅用于从要被定位的设备接收分组。
-
4.发明申请INSERTING TIME OF DEPARTURE INFORMATION IN FRAMES TO SUPPORT MULTI-CHANNEL LOCATION TECHNIQUES 有权支持多通道位置技术的框架中的离开时间的插入时间公开(公告)号：US20090257426A1
公开(公告)日：2009-10-15
申请号：US12168250
申请日：2008-07-07
申请人： Brian Donald Hart , Paul J. Stager , Allan Thomson
发明人： Brian Donald Hart , Paul J. Stager , Allan Thomson
IPC分类号： H04J3/06
CPC分类号： G01S5/0226
摘要： A device whose location is to be determined (target device) generates a plurality of frames (messages) and time of departure (TOD) timestamp information indicating when the target device transmits the plurality of frames in a sequence or burst. The target device transmits the plurality of frames and the TOD information, wherein the plurality of frames are transmitted such that at least two of the frames are on different radio frequency (RF) channels. Within a sequence or burst (or across multiple sequences or bursts), multiple widely spaced transmissions on the same channel are included to allow for estimation of the crystal frequency offset of the transmitting device. The TOD information included in the transmitted packets allows devices that receive the packets not to change their channels of operation solely for the purpose of receiving packets from the device to be located.
摘要翻译： 要确定其位置的设备（目标设备）产生指示目标设备何时以序列或突发方式发送多个帧的多个帧（消息）和出发时间（TOD）时间戳信息。 目标设备发送多个帧和TOD信息，其中发送多个帧，使得至少两个帧在不同的射频（RF）信道上。 在序列或突发（或跨多个序列或突发）中，包括相同信道上的多个宽间隔的传输以允许估计发射设备的晶体频率偏移。 包含在所发送的分组中的TOD信息允许接收分组的设备不改变其操作信道，仅用于从要被定位的设备接收分组。
-
公开(公告)号：US08559887B2
公开(公告)日：2013-10-15
申请号：US12792368
申请日：2010-06-02
IPC分类号： H04B17/00
CPC分类号： H04L25/0222 , H04B7/0617 , H04B17/309 , H04L25/0204 , H04L25/022
摘要： Techniques are provided to measure how fast a wireless channel is changing between a first wireless communication device (e.g., a wireless base station or access point) and a second wireless device (e.g., a wireless client device) based on signals that the first communication wireless device receives at a plurality of antennas from a second wireless communication device. Techniques are also provided to measure a degree of mobility of the second wireless communication device based on signals received at the first communication wireless device from the second communication wireless device.
摘要翻译： 提供技术来测量无线信道在第一无线通信设备（例如，无线基站或接入点）和第二无线设备（例如，无线客户端设备）之间基于第一通信无线 设备在多个天线处从第二无线通信设备接收。 还提供了用于基于在第一通信无线设备从第二通信无线设备接收的信号来测量第二无线通信设备的移动程度的技术。
-
公开(公告)号：US20130083676A1
公开(公告)日：2013-04-04
申请号：US13249473
申请日：2011-09-30
申请人： Paul J. Stager
发明人： Paul J. Stager
IPC分类号： H04W52/24
CPC分类号： H04L27/0006 , H04W28/18 , Y10S370/913
摘要： Enhanced stomp-and-restart techniques are provided. At a plurality of antennas of a wireless communication device, energy is received in a channel in which one or more frames may be transmitted to the wireless communication device from any one of a plurality of other wireless communication devices. A first frame is acquired from the received energy. Channel state information is computed for the first frame and the channel state information associated with the first frame is stored. Interference suppression parameters are computed for the first frame from the channel state information. It is determined whether a stronger second frame is being received by the wireless communication device. The received energy associated with the first frame is nulled-out using the interference suppression parameters when the stronger second frame is determined to be received so that start-of-packet processing and decoding is performed on the stronger second frame.
摘要翻译： 提供了强化的重启和重启技术。 在无线通信设备的多个天线处，能够在多个其它无线通信设备中的任何一个的无线通信设备中发送一个或多个帧的信道中接收能量。 从接收的能量获取第一帧。 针对第一帧计算信道状态信息，并且存储与第一帧相关联的信道状态信息。 对于来自信道状态信息的第一帧计算干扰抑制参数。 确定无线通信设备是否正在接收更强的第二帧。 当确定更强的第二帧被接收时，使用干扰抑制参数将与第一帧相关联的接收能量置零，使得对较强的第二帧执行分组数据包处理和解码。
-
公开(公告)号：US08411807B1
公开(公告)日：2013-04-02
申请号：US12202782
申请日：2008-09-02
IPC分类号： H03D1/00
CPC分类号： H04L69/22 , H04L1/08 , H04L7/08 , H04L27/2607 , H04L27/2647 , H04L27/2656 , H04L27/2671 , H04L27/2679
摘要： A mid-packet detection technique is provided that detects a packet with periodic repetitions of a fixed duration at a point in time of the packet other than a start-of-packet pattern, e.g., a preamble, associated with the packet. The process performs packet detection without detecting a preamble and does not require carrier frequency recovery, timing recovery (synchronization) or channel estimation. In one embodiment, a doubly differential matched filter autocorrelation of the received signal is computed and used as a metric for packet detection when the preamble is not observed or to complement preamble detection. The metric is compared to a threshold to indicate detection of a packet.
摘要翻译： 提供了一种中间包检测技术，其检测分组的周期性重复，该分组在分组的时间点不同于与分组相关联的分组开始模式（例如，前导码）。 该过程执行分组检测而不检测前导码，并且不需要载波频率恢复，定时恢复（同步）或信道估计。 在一个实施例中，计算接收信号的双差分匹配滤波器自相关，并将其用作当没有观察到前同步码时的分组检测的度量或用于对前导码检测进行补码。 将度量与阈值进行比较以指示分组的检测。
-
8.发明申请Adaptive Interference Nulling for MIMO Receiver Based on Interference Characteristics 有权基于干扰特性的MIMO接收机的自适应干扰消除公开(公告)号：US20120264388A1
公开(公告)日：2012-10-18
申请号：US13086643
申请日：2011-04-14
申请人： Li Guo , Hang Jin , Paul J. Stager , Neil R. Diener , Matthew A. Silverman , Chandra Vaidyanathan
发明人： Li Guo , Hang Jin , Paul J. Stager , Neil R. Diener , Matthew A. Silverman , Chandra Vaidyanathan
IPC分类号： H04B1/10
CPC分类号： H04B7/0865 , H04B17/345
摘要： Interference in an unlicensed frequency band is spatially filtered out from received signals at a wireless device operating in the unlicensed frequency band. Energy received at a plurality of antennas of the wireless is device is analyzed to detect interference in the unlicensed frequency band. The detected interference is classified by type. Parameters for a nulling filter are generated or selected based on the type of interference detected in the received energy. During a time interval when it is expected to receive desired signals, the nulling filter is applied using the parameters to signals obtained from energy received at the plurality of antennas during the time interval.
摘要翻译： 未经授权的频带中的干扰在从未接收的频带中工作的无线设备的接收信号中被空间滤除。 对在无线的多个天线处接收的能量进行分析，以检测未许可频带中的干扰。 检测到的干扰按类型分类。 基于在接收能量中检测到的干扰类型来生成或选择归零滤波器的参数。 在预期接收期望信号的时间间隔期间，使用参数将归零滤波器应用于在时间间隔期间从在多个天线接收的能量获得的信号。
-
9.发明申请公开(公告)号：US20110019759A1
公开(公告)日：2011-01-27
申请号：US12823236
申请日：2010-06-25
IPC分类号： H04B7/02
CPC分类号： H04B7/0413 , H04B7/0617 , H04L5/0023 , H04L5/0051 , H04L25/0204 , H04L25/0228 , H04L25/0242 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04W52/42
摘要： Techniques are provided to derive the spatial expansion matrix used when one wireless communication device sends a transmission with a number of spatial streams less than the number of its transmit antennas to another wireless communication device. These techniques involve, at the receiving wireless communication device, generating channel estimate information for received transmissions sent with different numbers of spatial streams and to determine when sufficient information is available to estimate a spatial expansion matrix for different spatial expansion scenarios.
摘要翻译： 提供技术来导出当一个无线通信设备向其他无线通信设备发送具有小于其发射天线的数量的多个空间流的传输时使用的空间扩展矩阵。 这些技术涉及在接收无线通信设备处，生成用于以不同数量的空间流发送的接收传输的信道估计信息，并且确定何时有足够的信息可用于估计不同空间扩展方案的空间扩展矩阵。
-
公开(公告)号：US08885453B2
公开(公告)日：2014-11-11
申请号：US13249473
申请日：2011-09-30
申请人： Paul J. Stager
发明人： Paul J. Stager
CPC分类号： H04L27/0006 , H04W28/18 , Y10S370/913
摘要： Enhanced stomp-and-restart techniques are provided. At a plurality of antennas of a wireless communication device, energy is received in a channel in which one or more frames may be transmitted to the wireless communication device from any one of a plurality of other wireless communication devices. A first frame is acquired from the received energy. Channel state information is computed for the first frame and the channel state information associated with the first frame is stored. Interference suppression parameters are computed for the first frame from the channel state information. It is determined whether a stronger second frame is being received by the wireless communication device. The received energy associated with the first frame is nulled-out using the interference suppression parameters when the stronger second frame is determined to be received so that start-of-packet processing and decoding is performed on the stronger second frame.
摘要翻译： 提供了强化的重启和重启技术。 在无线通信设备的多个天线处，能够在多个其它无线通信设备中的任何一个的无线通信设备中发送一个或多个帧的信道中接收能量。 从接收的能量获取第一帧。 针对第一帧计算信道状态信息，并且存储与第一帧相关联的信道状态信息。 对于来自信道状态信息的第一帧计算干扰抑制参数。 确定无线通信设备是否正在接收更强的第二帧。 当确定更强的第二帧被接收时，使用干扰抑制参数将与第一帧相关联的接收能量置零，使得对较强的第二帧执行分组数据包处理和解码。
-
-
-
-
-
-
-
-
-
搜索结果
33 条记录 (耗时 0.025 秒)
