公开(公告)号：US20120217818A1

公开(公告)日：2012-08-30

申请号：US13209366

申请日：2011-08-12

申请人： William S. Yerazunis ,  Bingnan Wang ,  Chunjie Duan ,  John Barnwell ,  Dan J. Burns

发明人： William S. Yerazunis ,  Bingnan Wang ,  Chunjie Duan ,  John Barnwell ,  Dan J. Burns

IPC分类号： H02J17/00

CPC分类号： H04B5/0081 ,  B60L11/1846 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/05 ,  H02J50/12 ,  H02J50/20 ,  H02J50/40 ,  H02J50/70 ,  H04B5/0037 ,  H04B5/0087 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/121 ,  Y02T90/128 ,  Y02T90/14 ,  Y02T90/163 ,  Y02T90/169 ,  Y04S30/14

摘要： A system transfers energy wirelessly from a source to a sink as an EM near-field according to parameters. The source includes a receive RF chain, and a receive controller. The sink includes a transmit RF chain, and a receive controller. The receive controller measures the energy received as feedback information, which is transmitted to the sink. Then, the transmit controller dynamically varies the parameters to optimized the energy received at the sink.

摘要翻译： 根据参数，系统将能量从一个源无线传输到一个接收器作为EM近场。 源包括接收RF链和接收控制器。 接收器包括发射RF链和接收控制器。 接收控制器测量接收的能量作为反馈信息，将其传输到接收器。 然后，发射控制器动态地改变参数以优化在水槽处接收的能量。

公开(公告)号：US20120217817A1

公开(公告)日：2012-08-30

申请号：US13209336

申请日：2011-08-12

申请人： Bingnan Wang ,  William S. Yerazunis ,  Chunjie Duan ,  Koon Hoo Teo

发明人： Bingnan Wang ,  William S. Yerazunis ,  Chunjie Duan ,  Koon Hoo Teo

IPC分类号： H02J17/00 ,  H03J7/08

CPC分类号： H04B5/0081 ,  B60L53/65 ,  B66B7/00 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/05 ,  H02J50/12 ,  H02J50/20 ,  H02J50/40 ,  H02J50/70 ,  H04B5/0037 ,  H04B5/0087 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/121 ,  Y02T90/128 ,  Y02T90/14 ,  Y02T90/163 ,  Y02T90/169 ,  Y04S30/14

摘要： A system for exchanging energy wirelessly includes an array of objects, wherein each object is electromagnetic (EM) and non-radiative and generates an EM near-field in response to receiving the energy. Each object in the array is electrically isolated from the other objects and arranged at a distance from all other objects. An energy driver provides the energy to the array of objects. A receiver, at a relative position with respect to the array receives the energy via resonant coupling of evanescent waves. The system can tunes characteristics of the EM near-field depending on a relative position of the receiver with respect to the array. The tuning can affect frequency, phase and amplitude of the energy field.

摘要翻译： 用于无线交换能量的系统包括物体阵列，其中每个物体是电磁（EM）和非辐射的，并且响应于接收能量而产生EM近场。 阵列中的每个对象与其他对象电隔离，并且与所有其他对象相距一定距离。 能量驱动器为物体阵列提供能量。 在相对于阵列的相对位置处的接收器通过ev逝波的谐振耦合接收能量。 该系统可以根据接收机相对于阵列的相对位置来调谐EM近场的特性。 调谐可以影响能量的频率，相位和幅度。

公开(公告)号：US20120148046A1

公开(公告)日：2012-06-14

申请号：US12965580

申请日：2010-12-10

申请人： Chunjie Duan ,  Yige Wang ,  Wei Liu

发明人： Chunjie Duan ,  Yige Wang ,  Wei Liu

IPC分类号： H04K1/00

CPC分类号： H04W12/02 ,  H03M13/353 ,  H03M13/3761 ,  H03M13/6393 ,  H04L1/0041 ,  H04L1/18 ,  H04L9/0875 ,  H04L63/0428 ,  H04L63/061 ,  H04L2209/80 ,  H04W12/04

摘要： Data are communicated in a wireless network between a transmitter to a receiver. The transmitter estimates a first channel response between the receiver and the transmitter at the transmitter, and generating a first key based on the first channel response. The data are encoded at the transmitter using a rate-adaptive code to produce encoded data, which is scrambling using the first key before broadcasting. Subsequently, the receiver can estimate a second channel response to generate a second key to be used to descramble the broadcast data.

摘要翻译： 数据在发射机到接收机之间的无线网络中通信。 发射机估计在发射机处的接收机和发射机之间的第一信道响应，并且基于第一信道响应产生第一密钥。 数据在发射机处使用速率自适应码进行编码，以产生编码数据，编码数据在广播之前使用第一个密钥加扰。 随后，接收机可以估计第二信道响应以产生要用于解扰广播数据的第二密钥。

公开(公告)号：US20120147879A1

公开(公告)日：2012-06-14

申请号：US12979777

申请日：2010-12-28

申请人： Jianlin Guo ,  Raymond Yim ,  Jinyun Zhang ,  Philip V. Orlik ,  Chunjie Duan ,  Frederick J. Igo, JR.

发明人： Jianlin Guo ,  Raymond Yim ,  Jinyun Zhang ,  Philip V. Orlik ,  Chunjie Duan ,  Frederick J. Igo, JR.

IPC分类号： H04W72/04 ,  H04W56/00

CPC分类号： H04W72/1242

摘要： A hybrid communication network for a transportation safety system includes a fixed wired nodes and mobile wireless nodes. Because the wired nodes operate independently packets transmitted by the wired nodes to the wireless nodes need to be synchronized. A downlink travel time for downlink packets traveling from a controller to the wireless nodes is determined. Then, the controller schedules downlink data intervals (DDI) based on the downlink travel time; and transmits downlink packets to the wireless nodes during the DDI, such that a latency requirement of the transportation safety system is satisfied.

摘要翻译： 用于运输安全系统的混合通信网络包括固定有线节点和移动无线节点。 由于有线节点独立运行，有线节点传输到无线节点的数据包需要同步。 确定从控制器到无线节点的下行链路分组的下行链路行进时间。 然后，控制器基于下行链路行进时间调度下行链路数据间隔（DDI）; 并且在DDI期间向无线节点发送下行链路分组，使得满足运输安全系统的等待时间要求。

公开(公告)号：US20120129458A1

公开(公告)日：2012-05-24

申请号：US12950683

申请日：2010-11-19

申请人： Raymond Yim ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang ,  Jianlin Guo ,  Frederick J. Igo, JR.

发明人： Raymond Yim ,  Philip V. Orlik ,  Chunjie Duan ,  Jinyun Zhang ,  Jianlin Guo ,  Frederick J. Igo, JR.

IPC分类号： H04B7/00

CPC分类号： B66B1/34 ,  B66B5/0031 ,  B66B13/22

摘要： In a network for a safety system in a transportation system, the transportation system includes a shaft and a car arranged in the shaft. A first wall node is at a first end of the shaft and a second wall node is at a second end of the shaft to communicate safety messages with the car. Each wall node includes at least one wireless transceiver connected to one or more antennas. Each car in the shaft includes at least two wireless transceiver connected to one or more antennas, wherein the first transceiver of the car uses a first frequency and the second transceiver of the car uses a second frequency to communicate each safety messages in duplicate. A wired backbone connects the set of wall nodes to a controller of the safety system of the transportation system.

摘要翻译： 在用于运输系统中的安全系统的网络中，运输系统包括布置在轴中的轴和轿厢。 第一壁节点位于轴的第一端，并且第二壁节点位于轴的第二端，以将安全信息与轿厢通信。 每个墙壁节点包括连接到一个或多个天线的至少一个无线收发器。 轴中的每个汽车包括连接到一个或多个天线的至少两个无线收发器，其中汽车的第一收发器使用第一频率，并且汽车的第二收发器使用第二频率来重复地传送每个安全消息。 有线骨干将该组墙壁节点连接到运输系统的安全系统的控制器。

公开(公告)号：US08121805B2

公开(公告)日：2012-02-21

申请号：US12571226

申请日：2009-09-30

申请人： Chunjie Duan ,  Raymond Yim ,  Frederick J Igo, Jr. ,  Amine Maaref

发明人： Chunjie Duan ,  Raymond Yim ,  Frederick J Igo, Jr. ,  Amine Maaref

IPC分类号： G01B7/04 ,  G06F15/00

CPC分类号： G01B7/003

摘要： A location of an object is determined by arranging a sequence of bits on a substrate. The sequence of bits includes subsequence of bits, and each subsequence of bits is unique for each location along the substrate. When the object is at a particular location along the substrate a sensor detects the subsequence of bits at the particular location, and a decoder associates the location of the subsequence at the particular location with the object. The substrate can be a leaky coaxial cable with slits or not, corresponding to the bits, or lane markings on a road.

摘要翻译： 通过在衬底上布置位序列来确定对象的位置。 比特序列包括比特的子序列，并且比特的每个子序列对于沿着基底的每个位置是唯一的。 当物体沿着衬底处于特定位置时，传感器检测特定位置处的位的子序列，并且解码器将特定位置处的子序列的位置与对象相关联。 衬底可以是具有狭缝的泄漏同轴电缆，对应于道路上的位或车道标记。

公开(公告)号：US20110156486A1

公开(公告)日：2011-06-30

申请号：US12648593

申请日：2009-12-29

申请人： Koon Hoo Teo ,  Vishwanath Lyer ,  William S. Yerazunis ,  Chunjie Duan ,  Da Huang

发明人： Koon Hoo Teo ,  Vishwanath Lyer ,  William S. Yerazunis ,  Chunjie Duan ,  Da Huang

IPC分类号： H02J17/00

CPC分类号： H02J50/20 ,  H02J5/005 ,  H02J7/025 ,  H02J50/10 ,  H02J50/12

摘要： Embodiments of the invention disclose a method and a system configured to exchange energy wirelessly, comprising a structure configured to exchange the energy wirelessly via a coupling of evanescent waves, wherein the structure is electromagnetic (EM) and non-radiative, and wherein the structure generates an EM near-field in response to receiving the energy; and a controller configured to tune up the structure such that the near-field is generated according a particular energy distribution pattern.

摘要翻译： 本发明的实施例公开了一种被配置为无线地交换能量的方法和系统，包括被配置为经由ev逝波的耦合无线地交换能量的结构，其中该结构是电磁（EM）和非辐射的，并且其中该结构产生 响应于接收能量的EM近场; 以及控制器，被配置为调整所述结构，使得根据特定的能量分布模式生成所述近场。

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。

公开(公告)号：US20100172339A1

公开(公告)日：2010-07-08

申请号：US11959974

申请日：2007-12-19

申请人： Chunjie Duan ,  Giovanni Vannucci

发明人： Chunjie Duan ,  Giovanni Vannucci

IPC分类号： H04J3/06

CPC分类号： G01S13/765

摘要： A method and system improves two-way radio ranging accuracy by estimating a relative clock frequency offset between a first clock X of a first transceiver and a second clock Y a second transceiver. The first transceiver transmits a first packet at time t0 received by the second transceiver at a time t1. The second transceiver transmits a second packet at a time t2 received by first transceiver at a time t3. The second transceiver transmits a third packet at a time t4 received at a time t5. The relative clock frequency offset is then Δ   f XY ′ ≅ 2   f  ( N 24 Y - N 35 X ) N 24 Y + N 35 X , where f is a nominal clock frequency of the first and second clocks, NY24 is a measured first delay between times t2 and t4 of the second clock, NX35 is a measured second delay between times t3 and t5 of the first clock X.

摘要翻译： 方法和系统通过估计第一收发器的第一时钟X和第二时钟Y之间的相对时钟频率偏移和第二收发器来改善双向无线电测距精度。 第一收发器在时间t1发送由第二收发器接收的时间t0的第一分组。 第二收发器在时间t3在由第一收发器接收的时间t2发送第二分组。 第二收发器在时间t5接收的时间t4发送第三个分组。 相对时钟频率偏移为＆Dgr; （N 24 Y - N 35 X）N 24 Y + N 35 X，其中f是第一和第二时钟的标称时钟频率，NY24是时间之间的测量的第一延迟 t2和t4，NX35是第一时钟X的时间t3和t5之间的测量的第二延迟。

公开(公告)号：US20080298513A1

公开(公告)日：2008-12-04

申请号：US11755890

申请日：2007-05-31

申请人： Sinan Gezici ,  Chunjie Duan ,  Jinyun Zhang ,  Rajesh Garg

发明人： Sinan Gezici ,  Chunjie Duan ,  Jinyun Zhang ,  Rajesh Garg

IPC分类号： H04L27/06

CPC分类号： H03M13/41

摘要： An adaptive sliding block Viterbi decoder (ASBVD) includes forward and backward Viterbi processors, a state estimator and a control unit. The processors generate metrics of states and of transitions between the states associated with an encoder, based on encoded input information symbols received via a communications channel. Each processor includes a plurality of buffers for storing information symbols so that a number of the encoded input information symbols can be concurrently decoded. The state estimator estimates a current state of a code trellis based on the generated metrics, and the processors decode the stored information symbols based on the estimated current state. The control unit adapts the number of encoded input information symbols to be concurrently decoded based on a condition of the communications channel, and selectively controls the number of buffers that are enabled in accordance with the number of encoded input information symbols to be concurrently decoded.

摘要翻译： 自适应滑块维特比解码器（ASBVD）包括前向和后向维特比处理器，状态估计器和控制单元。 处理器基于经由通信信道接收的经编码的输入信息符号，产生状态和与编码器相关联的状态之间的转变的度量。 每个处理器包括用于存储信息符号的多个缓冲器，使得可以同时解码多个编码的输入信息符号。 状态估计器基于所生成的度量来估计代码网格的当前状态，并且处理器基于估计的当前状态解码所存储的信息符号。 控制单元基于通信信道的条件来适应要同时解码的编码输入信息符号的数量，并且根据要编码的输入信息符号的数量来选择性地控制能够被同时解码的缓冲器的数量。