公开(公告)号：US20090075590A1

公开(公告)日：2009-03-19

申请号：US11577106

申请日：2005-04-15

申请人： Zafer Sahinoglu ,  Ismail Guvenc ,  Andreas F. Molisch

发明人： Zafer Sahinoglu ,  Ismail Guvenc ,  Andreas F. Molisch

IPC分类号： H04B7/24

CPC分类号： H04B1/71637 ,  G01S5/0221 ,  G01S13/76 ,  H04B17/318 ,  H04B17/336 ,  H04B17/345

摘要： A method and system (500) estimates a time of arrival of a signal received via a wireless communications channel. The energy in the received signal is conditioned at multiple different time scales to produce a conditioned signal (700). Then, a leading edge is detected in the conditioned signal (550). The leading edge corresponds to the time of arrival of the received signal (551).

摘要翻译： 方法和系统（500）估计经由无线通信信道接收的信号的到达时间。 接收信号中的能量被调节在多个不同的时标上以产生调节信号（700）。 然后，在调节信号（550）中检测前沿。 前沿对应于接收信号的到达时间（551）。

公开(公告)号：US20090021420A1

公开(公告)日：2009-01-22

申请号：US11577129

申请日：2005-04-22

申请人： Zafer Sahinoglu

发明人： Zafer Sahinoglu

IPC分类号： G01S13/08

CPC分类号： H04B1/71637 ,  G01S5/0221 ,  G01S13/76 ,  H04B17/318 ,  H04B17/336 ,  H04B17/345

摘要： A method generates (200) a radio signal to be used for ranging. For each of one of multiple frames (501,505) to be transmitted as a ranging symbol, a first time interval (560) and a second time interval (580) are allocated. The ranging symbol is then transmitted as a set of pulses in each of the frames ((501,505)) only during the first time interval (560), and the second time interval (580) has a length to reduces inter-frame interference.

摘要翻译： 一种方法产生（200）要用于测距的无线电信号。 对于作为测距符号发送的多个帧（501,505）中的一个帧中的每一个，分配第一时间间隔（560）和第二时间间隔（580）。 然后，仅在第一时间间隔（560）期间，将测距符号作为每个帧（（501,505））中的一组脉冲发送，并且第二时间间隔（580）具有减小帧间干扰的长度。

公开(公告)号：US07403157B2

公开(公告)日：2008-07-22

申请号：US11520418

申请日：2006-09-13

申请人： Sinan Gezici ,  Zafer Sahinoglu ,  Jinyun Zhang

发明人： Sinan Gezici ,  Zafer Sahinoglu ,  Jinyun Zhang

IPC分类号： G01S1/24

CPC分类号： G01S5/10 ,  G01S5/0215 ,  G01S5/0221 ,  G01S13/003 ,  G01S13/878

摘要： A method determines a position of a target object. A window function is applied repeatedly to a first signal and a second signal of a pair of radio signals received at a pair of passive sensors from a target object while time shifting the window function during a correlation interval to produce a first windowed signal and a second windowed signal for each application. The first windowed signals are cross-correlating with the second windowed signals to determine a peak for each cross-correlation. The peaks are compared sequentially in time with a predetermined threshold to detect a first pulse in the first signal and a first pulse in the second signal. A delay between the first pulses indicative of a position of the target object.

摘要翻译： 方法确定目标对象的位置。 在相关间隔期间对窗函数进行时间偏移以产生第一窗口信号和第二窗口信号的情况下，对来自目标对象的一对无源传感器接收的一对无线电信号的第一信号和第二信号重复施加窗函数， 每个应用程序的窗口信号。 第一窗口信号与第二窗口信号互相关，以确定每个互相关的峰值。 峰值按时间顺序地与预定阈值进行比较，以检测第一信号中的第一脉冲和第二信号中的第一脉冲。 表示目标对象的位置的第一脉冲之间的延迟。

公开(公告)号：US20080062043A1

公开(公告)日：2008-03-13

申请号：US11520418

申请日：2006-09-13

申请人： Sinan Gezici ,  Zafer Sahinoglu ,  Jinyun Zhang

发明人： Sinan Gezici ,  Zafer Sahinoglu ,  Jinyun Zhang

IPC分类号： G01S1/24

CPC分类号： G01S5/10 ,  G01S5/0215 ,  G01S5/0221 ,  G01S13/003 ,  G01S13/878

摘要： A method determines a position of a target object. A window function is applied repeatedly to a first signal and a second signal of a pair of radio signals received at a pair of passive sensors from a target object while time shifting the window function during a correlation interval to produce a first windowed signal and a second windowed signal for each application. The first windowed signals are cross-correlating with the second windowed signals to determine a peak for each cross-correlation. The peaks are compared sequentially in time with a predetermined threshold to detect a first pulse in the first signal and a first pulse in the second signal. A delay between the first pulses indicative of a position of the target object.

公开(公告)号：US20060083340A1

公开(公告)日：2006-04-20

申请号：US10970642

申请日：2004-10-20

申请人： Sinan Gezici ,  Zafer Sahinoglu

发明人： Sinan Gezici ,  Zafer Sahinoglu

IPC分类号： H04L7/00

CPC分类号： H04W56/0075

摘要： A method estimates a distance between transceivers in a wireless communications network. A first time interval T is set in a transmitter and a receiver. A signal is transmitted from the transmitter to the receiver at a time t2 according to a first clock of the transmitter. The signal is received in the receiver at a time t3. Processing delays of the receivers are determined. A reply to the signal is sent from the receiver to the transmitter at a time t6 such that |t3−t6|=T. The reply is received in the transmitter at a time t7 of the first clock and a distance d between the transmitter and the receiver is determined according to d=c(|t2−t7|−T)/2, where c is the speed of light.

摘要翻译： 一种方法估计无线通信网络中的收发器之间的距离。 在发射机和接收机中设置第一时间间隔T. 根据发射机的第一时钟，信号在时间t 2从发射机发射到接收机。 该信号在时间t 3 3接收在接收器中。 确定接收机的处理延迟。 在时间t 6时，对信号的响应从接收器发送到发射机，使得| t 3→T 6 | = T 。 在第一时钟的时间t 7处，在发射机中接收到应答，并且根据d = c（| t 2）确定发射机和接收机之间的距离d -T）/ 2，其中c是光速。

公开(公告)号：US20060039447A1

公开(公告)日：2006-02-23

申请号：US10923481

申请日：2004-08-20

申请人： Zafer Sahinoglu ,  Sinan Gezici

发明人： Zafer Sahinoglu ,  Sinan Gezici

IPC分类号： H04B1/69

CPC分类号： H04B1/71632 ,  H04B1/71635 ,  H04B1/719

摘要： A method signals in an ultra-wide bandwidth network. A data symbol is generated. A set of reference pulses is transmitted for the data symbol. Each reference pulse is of a different type. One data pulse is also transmitted for each reference pulse. A type of each data pulse is identical to the type of the corresponding reference pulse.

公开(公告)号：US20050111428A1

公开(公告)日：2005-05-26

申请号：US10722031

申请日：2003-11-25

申请人： Philip Orlik ,  Zafer Sahinoglu ,  Jinyun Zhang

发明人： Philip Orlik ,  Zafer Sahinoglu ,  Jinyun Zhang

IPC分类号： H04B1/38 ,  H04B7/26 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04W40/10 ,  H04L45/02 ,  H04L45/121 ,  H04W40/28 ,  H04W84/18 ,  Y02D30/20 ,  Y02D70/22 ,  Y02D70/326

摘要： An ad-hoc wireless communication network includes multiple nodes. Each node maintains a routing table. The routing table is constructed by broadcasting route request packets from a source node. The request packet includes an address of a destination node. Intermediate nodes in the network receiving the request packet, determine power and delay cost associated with the intermediate node participating in the route. If the cost is less than a threshold value, then the intermediate node participates in the routing of packets for other nodes. The intermediate node then sends a reply packet back to the source node. The reply packet includes the intermediate node addresses, as well as the power and delay costs. The source can thus construct the routing table. The source node can select a particular node for transferring application data packets based on either the power cost, the delay cost or both costs.

摘要翻译： 自组织无线通信网络包括多个节点。 每个节点维护路由表。 路由表是通过从源节点广播路由请求报文来构建的。 请求分组包括目的地节点的地址。 接收请求分组的网络中的中间节点确定与参与路由的中间节点相关联的功率和延迟成本。 如果成本小于阈值，则中间节点参与其他节点的分组路由。 然后，中间节点将回复分组发送回源节点。 应答包包括中间节点地址，以及功率和延迟成本。 因此，源可以构建路由表。 源节点可以基于电力成本，延迟成本或两者成本来选择用于传送应用数据分组的特定节点。

公开(公告)号：US06885969B2

公开(公告)日：2005-04-26

申请号：US10649759

申请日：2003-08-26

申请人： Zafer Sahinoglu

发明人： Zafer Sahinoglu

IPC分类号： G01C17/00 ,  G01S5/02 ,  G01S5/12 ,  G01S19/09 ,  G01S19/42 ,  G06F15/00 ,  H04L12/56 ,  H04W24/00 ,  H04W64/00

CPC分类号： H04W64/00 ,  G01S5/0289 ,  G01S5/12 ,  H04W24/00

摘要： A method locates a mobile node in a partially synchronized wireless network comprised of nodes with heterogeneous communication ranges. The time intervals it takes for messages to travel from stationary nodes at known location to a mobile node at an unknown location are measured and used to determine a set of possible coordinates of the mobile node. This time-based set of coordinates is in the form of a hyperbolic function. The received signal strengths of a message received from the mobile node is measured in two additional stationary nodes at known location. These RSS-based measurements provide two more sets of possible coordinates of the mobile node. The three sets are then intersected to estimate the location of the mobile node.

摘要翻译： 一种方法将移动节点定位在由具有异构通信范围的节点组成的部分同步的无线网络中。 测量消息从已知位置处的静止节点到未知位置的移动节点的时间间隔，并用于确定移动节点的一组可能的坐标。 这个基于时间的坐标系是双曲线函数的形式。 在已知位置的两个额外的固定节点中测量从移动节点接收的消息的接收信号强度。 这些基于RSS的测量提供了两组可能的移动节点坐标。 然后将三组相交，以估计移动节点的位置。

公开(公告)号：US20130116947A1

公开(公告)日：2013-05-09

申请号：US13292201

申请日：2011-11-09

申请人： Zafer Sahinoglu ,  Sefa Demirtas

发明人： Zafer Sahinoglu ,  Sefa Demirtas

IPC分类号： G06F19/00 ,  G01R31/00 ,  G01R25/00

CPC分类号： G01R29/16 ,  H02J3/28

摘要： A method for detecting unbalance in a 3-phase voltage signal is disclosed. The method includes determining an unbalance indicator as a value of a square of an amplitude of a positive sequence of the voltage signal; and comparing the unbalance indicator with a threshold to determine unbalance of the voltage signal.

摘要翻译： 公开了一种用于检测三相电压信号中的不平衡的方法。 该方法包括：将不平衡指示符确定为电压信号的正序列的振幅的平方值; 以及将所述不平衡指示器与阈值进行比较以确定所述电压信号的不平衡。

公开(公告)号：US20100254369A1

公开(公告)日：2010-10-07

申请号：US12419874

申请日：2009-04-07

申请人： Zhifeng Tao ,  Philip V. Orlik ,  Zafer Sahinoglu ,  Andreas F. Molisch ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Philip V. Orlik ,  Zafer Sahinoglu ,  Andreas F. Molisch ,  Jinyun Zhang

IPC分类号： H04J3/16 ,  H04L27/28

CPC分类号： H04L1/1621 ,  H04L27/26 ,  H04L2001/0093 ,  H04L2001/0097

摘要： A network includes a master node (master) and a set of slave nodes (slaves). The network uses orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. During a first downlink transmission from the master to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves is broadcast. Each slave transmits simultaneously to the master using uplinks and the assigned sub-carriers, a first response packet after receiving the broadcast polling packet. The master then broadcasts using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet include one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time.

摘要翻译： 网络包括主节点（主节点）和一组从节点（从节点）。 该网络在子载波上使用正交频分复用（OFDM）和时分多址（TDMA）符号。 在使用下行链路和所有子载波从主机到从机组的第一次下行链路传输期间，广播包括用于每个从机的数据分组的广播轮询分组和用于从机的子载波分配。 每个从设备使用上行链路和分配的子载波同时发送到主设备，第一响应分组在接收到广播轮询分组之后。 然后主机使用下行链路和所有子载波，一组确认分组广播，其中广播轮询分组，响应分组和组确认分组在一个通信周期中包括一个超帧，并且其中在下行链路上进行广播 并且在上行链路上的发送在时间上是不相交的。