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1. 发明申请

US20110074569A1 Method and Network for Determining Positions of Wireless Nodes While Minimizing Propagation of Positioning Errors 有权
标题翻译：确定无线节点位置的方法和网络，同时最大限度地减少定位误差的传播
公开(公告)号：US20110074569A1
公开(公告)日：2011-03-31
申请号：US12571399
申请日：2009-09-30
申请人： Nayef Alsindi , Chunjie Duan , Jinyun Zhang
发明人： Nayef Alsindi , Chunjie Duan , Jinyun Zhang
IPC分类号： G08B1/08
CPC分类号： G01S5/0289
摘要： A wireless sensor network includes an initial set of anchors at known locations, and a set of sensors at unknown locations. Ranges, from each sensor to at least three of the anchors, determine a position, an anchor ranging weight, and an anchor position weight. For each anchor, the anchor ranging weight and the anchor position weight form a combined weight. A weighted least square (WLS) function for the positions and the combined weights is minimized to determine a position of the sensor, and a sensor position weight. The sensor is identified as being a member of a set of candidate anchor nodes, and the candidate anchor node with a largest sensor position weight is selected to be transformed to another anchor to minimize propagation of errors in the positions of the set of sensors.
摘要翻译：无线传感器网络包括在已知位置处的初始锚点集合，以及在未知位置处的一组传感器。从每个传感器到至少三个锚的范围确定位置，锚定测距重量和锚定位置重量。对于每个锚，锚定距离权重和锚位置权重形成组合重量。用于位置和组合权重的加权最小二乘（WLS）功能被最小化以确定传感器的位置和传感器位置权重。传感器被识别为一组候选锚节点的成员，并且选择具有最大传感器位置权重的候选锚节点以被变换到另一个锚点，以最小化传感器组中位置误差的传播。

2. 发明授权

US08179251B2 Method and network for determining positions of wireless nodes while minimizing propagation of positioning errors 有权
标题翻译：用于确定无线节点的位置同时最小化定位误差传播的方法和网络
公开(公告)号：US08179251B2
公开(公告)日：2012-05-15
申请号：US12571399
申请日：2009-09-30
申请人： Nayef Alsindi , Chunjie Duan , Jinyun Zhang
发明人： Nayef Alsindi , Chunjie Duan , Jinyun Zhang
IPC分类号： G08B1/08
CPC分类号： G01S5/0289
摘要： A wireless sensor network includes an initial set of anchors at known locations, and a set of sensors at unknown locations. Ranges, from each sensor to at least three of the anchors, determine a position, an anchor ranging weight, and an anchor position weight. For each anchor, the anchor ranging weight and the anchor position weight form a combined weight. A weighted least square (WLS) function for the positions and the combined weights is minimized to determine a position of the sensor, and a sensor position weight. The sensor is identified as being a member of a set of candidate anchor nodes, and the candidate anchor node with a largest sensor position weight is selected to be transformed to another anchor to minimize propagation of errors in the positions of the set of sensors.
摘要翻译：无线传感器网络包括在已知位置处的初始锚点集合，以及在未知位置处的一组传感器。从每个传感器到至少三个锚的范围确定位置，锚定测距重量和锚定位置重量。对于每个锚，锚定距离权重和锚位置权重形成组合重量。用于位置和组合权重的加权最小二乘（WLS）功能被最小化以确定传感器的位置和传感器位置权重。传感器被识别为一组候选锚节点的成员，并且选择具有最大传感器位置权重的候选锚节点以被变换到另一个锚点，以最小化传感器组中位置误差的传播。

3. 发明授权

US08126405B2 Method for estimating condition of wireless channels 有权
标题翻译：无线信道状况估计方法
公开(公告)号：US08126405B2
公开(公告)日：2012-02-28
申请号：US12368813
申请日：2009-02-10
申请人： Chunjie Duan , Nayef Alsindi , Jinyun Zhang
发明人： Chunjie Duan , Nayef Alsindi , Jinyun Zhang
IPC分类号： H04B17/00
CPC分类号： H04L1/20 , H04B17/318
摘要： A method measures a time from transmitting a ranging signal to receiving the ranging signal via a channel of a wireless network, and a received signal strength (RSS) of the ranging signal. A distance is estimated based on the time, and a path loss based on the RSS. Probabilities of conditions of the channel are estimated based on the distance and the path loss, wherein the condition is in one of line-of-sight (LOS), or non-LOS (NLOS).
摘要翻译：一种方法测量从发送测距信号到经由无线网络的信道接收测距信号的时间，以及测距信号的接收信号强度（RSS）。基于时间估计距离，并且基于RSS的路径损耗。基于距离和路径损耗来估计信道条件的概率，其中条件是视线（LOS）或非LOS（NLOS）之一。

4. 发明申请

US20100203839A1 Method for Estimating Condition of Wireless Channels 有权
标题翻译：无线通道状况估计方法
公开(公告)号：US20100203839A1
公开(公告)日：2010-08-12
申请号：US12368813
申请日：2009-02-10
申请人： Chunjie Duan , Nayef Alsindi , Jinyun Zhang
发明人： Chunjie Duan , Nayef Alsindi , Jinyun Zhang
IPC分类号： H04B17/00
CPC分类号： H04L1/20 , H04B17/318
摘要： A method measures a time from transmitting a ranging signal to receiving the ranging signal via a channel of a wireless network, and a received signal strength (RSS) of the ranging signal. A distance is estimated based on the time, and a path loss based on the RSS. Probabilities of conditions of the channel are estimated based on the distance and the path loss, wherein the condition is in one of line-of-sight (LOS), or non-LOS (NLOS).
摘要翻译：一种方法测量从发送测距信号到经由无线网络的信道接收测距信号的时间，以及测距信号的接收信号强度（RSS）。基于时间估计距离，并且基于RSS的路径损耗。基于距离和路径损耗来估计信道条件的概率，其中条件是视线（LOS）或非LOS（NLOS）之一。

5. 发明授权

US08571003B2 Timeslot sharing protocol for wireless communication networks 失效
标题翻译：无线通信网络的时隙共享协议
公开(公告)号：US08571003B2
公开(公告)日：2013-10-29
申请号：US12193911
申请日：2008-08-19
申请人： Jianlin Guo , Chunjie Duan , Ghulam M. Bhatti , Jinyun Zhang
发明人： Jianlin Guo , Chunjie Duan , Ghulam M. Bhatti , Jinyun Zhang
IPC分类号： H04B7/212 , H04J3/00 , H04J3/17
CPC分类号： H04W72/0446 , H04B7/2656 , H04W48/08 , H04W74/02 , H04W84/12
摘要： A method for transmitting information in a communication network of multiple nodes, in which information transmission is partitioned into successive superframes, and in which each superframe is partitioned into a beacon period followed by a data period, which may consist of a contention free period (CFP), and each beacon period and CFP of the data period is partitioned into timeslots. The method includes allocating to at least a first node of the multiple nodes a designated timeslot in which to transmit data in at least one of a plurality of superframes, and allocating to at least a second node of the multiple nodes the same designated timeslot in which to transmit information during at least one subsequent superframe.
摘要翻译：一种用于在多个节点的通信网络中发送信息的方法，其中信息传输被划分为连续的超帧，并且其中每个超帧被划分成信标周期，随后是数据周期，数据周期可以包括无争用周期（CFP ），并且将数据周期的每个信标周期和CFP划分为时隙。该方法包括向多个节点中的至少第一节点分配指定时隙，在多个节点中的至少一个超帧中发送数据，并且向多个节点的至少第二节点分配相同的指定时隙，其中以在至少一个后续超帧期间传送信息。

6. 发明授权

US08369379B2 Packet synchronizing for communications over a wireless communication system 有权
公开(公告)号：US08369379B2
公开(公告)日：2013-02-05
申请号：US12453685
申请日：2009-05-19
申请人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
发明人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
IPC分类号： H04B1/7156 , H04L27/28 , H04J4/00
CPC分类号： H04J3/0608
摘要： Synchronization methods and systems for communications over a multi-band system are presented. A synchronization technique for communications over a multi-band system includes receiving a packet of preamble symbols respectively transmitted over a sequence of frequency sub-bands according to one of a plurality of frequency hopping patterns, wherein the plurality of frequency hopping patterns are partitioned into a plurality of disjoint groups, each group having a different associated periodicity; computing, in parallel, respective autocorrelation values of the packet received in a selected frequency sub-band at a plurality of symbol delays; and selecting one of the plurality of groups of frequency hopping patterns based on the autocorrelation values at the plurality of symbol delays.

7. 发明授权

US08238868B2 Dynamic voltage scaling for packet-based data communication systems 有权
标题翻译：基于数据包的数据通信系统的动态电压调整
公开(公告)号：US08238868B2
公开(公告)日：2012-08-07
申请号：US11755903
申请日：2007-05-31
申请人： Chunjie Duan , Sinan Gezici , Jinyun Zhang , Rajesh Garg
发明人： Chunjie Duan , Sinan Gezici , Jinyun Zhang , Rajesh Garg
IPC分类号： H04B1/16 , H04B1/04 , H04B7/00 , H04B1/38 , H04B7/212 , G05F1/577 , G05F1/38 , G05F3/02 , B23K11/24 , H03L5/00 , H03K5/08 , H03G3/20 , H03G3/10 , G08B5/22 , H04Q1/30 , G08C17/00 , H04L5/16 , H04L27/06
CPC分类号： H04B1/1607 , G01R33/0029 , G01R33/072 , H04B1/40 , H04W52/0216 , H04W52/0232 , Y02D70/12 , Y02D70/142 , Y02D70/40
摘要： A dynamic voltage scaling system for a packet-based data communication transceiver includes a constant voltage supply, a variable voltage supply, and a voltage control unit. The constant voltage supply is configured to supply a constant voltage to at least one parameter-independent function of the transceiver, and the variable voltage supply is configured to supply a variable voltage in accordance with a control signal to at least one parameter-dependent function of the transceiver. Parameter-independent transceiver functions perform operations independent of a predetermined parameter and parameter-dependent transceiver functions perform operations dependent on the predetermined parameter The voltage control unit is configured to generate the control signal based on information provided by at least one parameter-independent transceiver function about the predetermined parameter.
摘要翻译：用于基于分组的数据通信收发器的动态电压缩放系统包括恒定电压源，可变电压源和电压控制单元。恒压源被配置为向收发器的至少一个独立于参数的功能提供恒定电压，并且可变电压源被配置为根据控制信号将可变电压提供给至少一个参数相关函数收发器。独立于参数的收发机功能执行独立于预定参数的操作，并且参数相关收发器功能执行取决于预定参数的操作。电压控制单元被配置为基于由至少一个与参数无关的收发器功能提供的信息来生成控制信号预定参数。

8. 发明申请

US20120170684A1 Method and System for Decoding OFDM Signals Subject to Narrowband Interference 有权
标题翻译：用于解码窄带干扰的OFDM信号的方法和系统
公开(公告)号：US20120170684A1
公开(公告)日：2012-07-05
申请号：US12982636
申请日：2010-12-30
申请人： Raymond Yim , Amitav Mukherjee , Philip V. Orlik , Chunjie Duan , Jinyun Zhang
发明人： Raymond Yim , Amitav Mukherjee , Philip V. Orlik , Chunjie Duan , Jinyun Zhang
IPC分类号： H04B1/06
CPC分类号： H04L25/0204 , H04L25/0228 , H04L25/03159
摘要： A method estimates a wireless channel at a receiver. The signal is transmitted using narrowband orthogonal frequency division demultiplexing (OFDM) and frequency subcarriers, and the signal includes a set of data tones and a set of pilot tones. The channel and pilot tone interference are estimated based on all the pilot tones extracted from the signal and a channel model. The set of data are equalized based on the channel estimate. Data interference is detected according to the pilot interference and the equalized data tones. Subcarrier interference-to-noise ratios are determined based on the data interference. Signal strengths of the data tones are determined based on the equalized data tones, log-likelihood ratios of bits represented by the data tones are determined based on the subcarrier interference-to-noise ratios and the signal strength of the data tones.
摘要翻译：一种方法估计接收机处的无线信道。该信号使用窄带正交频分解复用（OFDM）和频率副载波来发送，并且该信号包括一组数据音调和一组导频音。基于从信号提取的所有导频音和信道模型来估计信道和导频音干扰。该数据集合基于信道估计来均衡。根据导频干扰和均衡数据音调检测数据干扰。基于数据干扰确定子载波干扰噪声比。基于均衡的数据音调确定数据音调的信号强度，基于副载波干扰信噪比和数据音调的信号强度来确定由数据音调表示的比特的对数似然比。

9. 发明申请

US20110194452A1 Transmitting Data with Multiple Priorities as OFDM Symbols 审中-公开
标题翻译：以多重优先级发送数据作为OFDM符号
公开(公告)号：US20110194452A1
公开(公告)日：2011-08-11
申请号：US13092562
申请日：2011-04-22
申请人： Philip Orlik , Raymond Yim , Chunjie Duan , Jinyun Zhang
发明人： Philip Orlik , Raymond Yim , Chunjie Duan , Jinyun Zhang
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04N19/615 , H04N19/105 , H04N19/13 , H04N19/46 , H04N19/597 , H04N19/61 , H04N19/63
摘要： A transmitter transmits data having a set of two or more priorities on subcarriers using orthogonal frequency division multiplexing (OFDM) symbols. The transmitter includes a media access (MAC) layer, wherein the MAC layer further includes a queue for storing data at each priority, a rate control block connected to each queue, and a physical (PHY) layer. The PHY layer further includes a channel coder for each priority, wherein each channel coder is connected to the corresponding queue to receive data, and to the rate control block to send coding information.
摘要翻译：发射机使用正交频分复用（OFDM）符号在子载波上发射具有两个或更多个优先级集合的数据。所述发射机包括媒体接入（MAC）层，其中所述MAC层还包括用于存储每个优先级的数据的队列，连接到每个队列的速率控制块以及物理（PHY）层。 PHY层还包括用于每个优先级的信道编码器，其中每个信道编码器连接到对应的队列以接收数据，并且连接到速率控制块以发送编码信息。

10. 发明申请

US20100246635A1 Methods and apparatus for narrow band interference detection and suppression in ultra-wideband systems 有权
标题翻译：超宽带系统中窄带干扰检测和抑制的方法和装置
公开(公告)号：US20100246635A1
公开(公告)日：2010-09-30
申请号：US12385078
申请日：2009-03-30
申请人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
发明人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
IPC分类号： H04B1/69 , H04B1/10
CPC分类号： H04J11/0066 , H04B1/719
摘要： An exemplary method is disclosed to accurately estimate the center frequency of a narrow-band interference (NBI). The exemplary method uses multi-stage autocorrelation-function (ACF) to estimate an NBI frequency. The exemplary method allows an accurate estimation of the center frequency of NBI in an Ultra-Wideband system. A narrow band interference (NBI) estimator based on such a method allows a low complexity hardware implementation. The exemplary method estimates the frequency in multiple stages. Each stage performs an ACF operation on the received signals. The first stage gives an initial estimation and the following stages refine the estimation. The results of all stages are combined to produce the final estimation. An apparatus based on such a multi-stage narrow band interference frequency detector is also disclosed to improve the accuracy by combining various filters with the detector.
摘要翻译：公开了一种用于精确估计窄带干扰（NBI）的中心频率的示例性方法。该示例性方法使用多级自相关函数（ACF）来估计NBI频率。该示例性方法允许在超宽带系统中准确估计NBI的中心频率。基于这种方法的窄带干扰（NBI）估计器允许低复杂度的硬件实现。该示例性方法以多个阶段估计频率。每个级对所接收的信号执行ACF操作。第一阶段给出初步估计，并且以下阶段改进估计。结合所有阶段的结果进行最终估计。还公开了一种基于这种多级窄带干扰频率检测器的装置，通过将各种滤波器与检测器组合来提高精度。

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