专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20080032708A1 METHOD FOR ESTIMATING JOINTLY TIME-OF-ARRIVAL OF SIGNALS AND TERMINAL LOCATION 失效
标题翻译：估计信号和终端位置的到期时间的方法
公开(公告)号：US20080032708A1
公开(公告)日：2008-02-07
申请号：US11832547
申请日：2007-08-01
申请人： Ismail Guvenc , Chia-Chin Chong
发明人： Ismail Guvenc , Chia-Chin Chong
IPC分类号： H04Q7/20
CPC分类号： G01S5/0215 , G01S5/0273 , G01S5/06 , G01S5/14 , H04W64/00
摘要： A method that estimates jointly and iteratively the first arriving path of a received signal and a mobile terminal location uses a residual location error. The method may include setting a ranging threshold to reduce residual location error. The method iteratively estimates the first arriving path of the received signals and mobile terminal location, with the estimate of mobile terminal location improving the estimate of the first arriving path, and vice versa. Initially, a peak selection method determines a rough time-of-arrival (TOA) for a signal received at each of a number of different fixed terminals. An estimate of the location of the mobile unit is then provided (e.g., based on a least-squares (LS) triangulation). If the residual error is unsatisfactory, the TOAs are refined, using a search-back algorithm, which searches back from the strongest paths of the received signals. The new TOAs are used to refine the estimate of the location of the mobile terminal. In addition, the parameters of the search-back algorithm (e.g., a search-back threshold, timing windows) may be modified for greater accuracy in the estimated first path. The first arriving path estimate and the location estimate are iterated until convergence (e.g., the residuals are within a tolerance) or until a termination condition is reached, usually controlled by the thresholds setting.
摘要翻译：联合地和迭代地估计接收信号和移动终端位置的第一到达路径的方法使用残留位置误差。该方法可以包括设置测距阈值以减少残留位置误差。该方法迭代地估计接收信号和移动终端位置的第一到达路径，移动终端位置的估计改善了第一到达路径的估计，反之亦然。首先，峰值选择方法确定在多个不同固定终端中的每一个处接收到的信号的粗略到达时间（TOA）。然后提供移动单元的位置的估计（例如，基于最小二乘法（LS）三角测量）。如果剩余误差不能令人满意，则使用搜索回溯算法来改进TOA，其从所接收信号的最强路径中回溯。新的TOA用于改进移动终端位置的估计。此外，可以在估计的第一路径中更精确地修改搜索返回算法的参数（例如，搜索返回阈值，定时窗口）。迭代第一到达路径估计和位置估计直到收敛（例如，残差在容差内）或直到达到终止条件，通常由阈值设置来控制。

42. 发明授权

US10312993B2 Cooperative clustering for enhancing MU-massive-MISO-based UAV communication 有权
公开(公告)号：US10312993B2
公开(公告)日：2019-06-04
申请号：US15337346
申请日：2016-10-28
申请人： Nadisanka Rupasinghe , Ismail Guvenc , Ahmed Salah Ibrahim Mohamed
发明人： Nadisanka Rupasinghe , Ismail Guvenc , Ahmed Salah Ibrahim Mohamed
IPC分类号： H04B7/185 , H04B7/0452 , B64C39/02 , G05D1/10
摘要： Methods, apparatuses, and systems for organizing data delivering unmanned aerial vehicles (UAVs) are provided. Inter-cluster coordinators can organize data delivering unmanned aerial vehicle base stations (UAV-BSs). Various beamforming techniques (e.g., LZFBF and ZFBF) can be incorporated, and the inter-cluster coordinator can operate on a base station that serves as a controlling network node.

43. 发明授权

US10027412B2 System and method for visible light communications with multi-element transmitters and receivers 有权
公开(公告)号：US10027412B2
公开(公告)日：2018-07-17
申请号：US15447478
申请日：2017-03-02
申请人： Yusuf S. Eroglu , Ismail Guvenc , Nezih Pala
发明人： Yusuf S. Eroglu , Ismail Guvenc , Nezih Pala
IPC分类号： H04B10/00 , H04B10/116 , H04B10/50 , H04B10/079
摘要： Apparatuses, systems, and methods of communication using visible light communications (VLC) are provided. A system can include a VLC transmitter and a VLC receiver suitable for implementing a diversity combining technique. The diversity combining technique can include equal gain combining, selective best combining, and maximal ratio combining. The VLC transmitter can be a multi-element diversity transmitter and can provide illumination as well as data transfer.

44. 发明申请

US20170171761A1 INTERFERENCE AND MOBILITY MANAGEMENT IN UAV-ASSISTED WIRELESS NETWORKS 有权
公开(公告)号：US20170171761A1
公开(公告)日：2017-06-15
申请号：US15443147
申请日：2017-02-27
申请人： Ismail Guvenc
发明人： Ismail Guvenc
IPC分类号： H04W16/22 , H04W36/20 , H04W16/28 , H04W16/14 , H04W76/02 , H04B7/185 , H04W4/22
CPC分类号： H04W16/22 , H04B7/18504 , H04B7/18506 , H04W4/90 , H04W16/14 , H04W16/28 , H04W36/20 , H04W36/30 , H04W36/32 , H04W76/15 , H04W84/042
摘要： Techniques and systems are disclosed for addressing the challenges in interference and mobility management in broadband, UAV-assisted heterogeneous network (BAHN) scenarios. Implementations include BAHN control components, for example, at a controlling network node of a BAHN. Generally, a component implementing techniques for managing interference and handover in a BAHN gathers state data from network nodes or devices in the BAHN, determines a candidate BAHN model that optimizes interference and handover metrics, and determines and performs model adjustments to the network parameters, BS parameters, and UAV-assisted base station (UABS) device locations and velocities to conform to the optimized candidate BAHN model. Also described is a UABS apparatus having a UAV, communications interface for communicating with a HetNet in accordance with wireless air interface standards, and a computing device suitable for implementing BAHN control or reinforcement learning components.

45. 发明授权

US09584976B2 Specific velocity estimation of wireless network devices 有权
标题翻译：无线网络设备的速度估计
公开(公告)号：US09584976B2
公开(公告)日：2017-02-28
申请号：US14749054
申请日：2015-06-24
申请人： Arvind Merwaday , Ismail Guvenc
发明人： Arvind Merwaday , Ismail Guvenc
IPC分类号： H04W4/02 , H04W72/04 , H04W36/00 , H04W36/32
CPC分类号： H04W4/027 , H04W4/021 , H04W36/0083 , H04W36/0088 , H04W36/32 , H04W64/006 , H04W72/048
摘要： Techniques are disclosed for determining a specific velocity of a device attached to a wireless network. The specific velocity can be determined using a handover count of the base station boundary transitions over a time window and/or using a set of sojourn time samples that each denote the duration the device remains in the zone of a particular base station. Techniques operate effectively in cellular networks having high base station densities. The specific velocity estimates may be inputs to components on the device or network to adjust a local device function or performance behavior.
摘要翻译：公开了用于确定连接到无线网络的设备的特定速度的技术。可以使用在时间窗口上的基站边界转换的切换计数和/或使用每个表示设备保持在特定基站的区域中的持续时间的一组驻留时间样本来确定特定速度。技术在具有高基站密度的蜂窝网络中有效地运行。具体的速度估计可以是设备或网络上的组件的输入，以调整本地设备功能或性能行为。

46. 发明授权

US08155595B2 Method for iterative interference cancellation for co-channel multi-carrier and narrowband systems 有权
标题翻译：用于同信道多载波和窄带系统的迭代干扰消除方法
公开(公告)号：US08155595B2
公开(公告)日：2012-04-10
申请号：US12652337
申请日：2010-01-05
申请人： Mustafa E. Sahin , Ismail Guvenc , Huseyin Arslan
发明人： Mustafa E. Sahin , Ismail Guvenc , Huseyin Arslan
IPC分类号： H04B1/00 , H04B1/04 , H04B1/06 , H04B1/10 , H04K1/10 , H04K1/02
CPC分类号： H04L27/2647 , H04J11/004 , H04J11/0066 , H04L5/0007 , H04L25/0204 , H04L25/0212 , H04L25/0224 , H04L25/03821
摘要： In a co-channel deployment of narrowband and multi-carrier technologies (e.g., a femtocell and a macrocell), a method provides cancelling of interference which treats the co-channel signals as desired signals and enhances each of them iteratively. At each iteration, each signal is demodulated and regenerated based on symbol decisions already made and a predetermined channel impulse response. To estimate the other (interfering) co-channel signal, the regenerated signal is subtracted from the aggregate signal. Simulations have shown that a method of the present invention can provide fundamental improvement in the performances of both interfering systems in as few as two iterations. The fundamental performance gain that can be obtained outweigh the required computational burden.
摘要翻译：在窄带和多载波技术（例如，毫微微小区和宏小区）的协同信道部署中，一种方法提供了将对等信道信号作为所需信号的干扰的取消，并且迭代地增强了每个信道。在每次迭代中，基于已经做出的符号决定和预定的信道脉冲响应来解调和再生每个信号。为了估计另一个（干扰）同信道信号，从聚合信号中减去再生信号。模拟已经表明，本发明的方法可以在两次迭代中提供两个干扰系统的性能的基本改进。可以获得的基本性能增益超过所需的计算负担。

47. 发明授权

US08027284B2 Method and apparatus for reliable multicasting in wireless relay networks 失效
标题翻译：无线中继网络可靠组播的方法和装置
公开(公告)号：US08027284B2
公开(公告)日：2011-09-27
申请号：US11944812
申请日：2007-11-26
申请人： Ulas C. Kozat , Ismail Guvenc
发明人： Ulas C. Kozat , Ismail Guvenc
IPC分类号： H04H20/71
CPC分类号： H04L1/1685 , H04L1/1887 , H04L2001/0093
摘要： A method and apparatus is disclosed herein for performing multi casting. In one embodiment, the method comprises receiving routing, association, relaying, and/or topology information associated with a plurality of nodes in a multi-hop wireless network, the plurality of nodes communicably coupled in a tree or mesh arrangement via a plurality of broadcast channels; and determining a subset of the plurality of nodes over each broadcast channel on the multi-hop wireless network that is responsible for sending acknowledgment information, in response to receipt or lack of receipt of transmissions, back to senders of transmissions.
摘要翻译：本文公开了一种用于执行多次铸造的方法和装置。在一个实施例中，所述方法包括接收与多跳无线网络中的多个节点相关联的路由，关联，中继和/或拓扑信息，所述多个节点经由多个广播以可通信的方式耦合到树形或网格布置渠道; 以及在所述多跳无线网络上的每个广播信道上确定所述多个节点的子集，所述多跳无线网络负责响应于接收或不接收传输而发送确认信息返回给发送者。

48. 发明授权

US07574221B2 Method for estimating jointly time-of-arrival of signals and terminal location 失效
标题翻译：估计信号和终端位置的联合到达时间的方法
公开(公告)号：US07574221B2
公开(公告)日：2009-08-11
申请号：US11832547
申请日：2007-08-01
申请人： Ismail Guvenc , Chia-Chin Chong
发明人： Ismail Guvenc , Chia-Chin Chong
IPC分类号： H04W24/00
CPC分类号： G01S5/0215 , G01S5/0273 , G01S5/06 , G01S5/14 , H04W64/00
摘要： A method that estimates jointly and iteratively the first arriving path of a received signal and a mobile terminal location uses a residual location error. The method may include setting a ranging threshold to reduce residual location error. The method iteratively estimates the first arriving path of the received signals and mobile terminal location, with the estimate of mobile terminal location improving the estimate of the first arriving path, and vice versa. Initially, a peak selection method determines a rough time-of-arrival (TOA) for a signal received at each of a number of different fixed terminals. An estimate of the location of the mobile unit is then provided (e.g., based on a least-squares (LS) triangulation). If the residual error is unsatisfactory, the TOAs are refined, using a search-back algorithm, which searches back from the strongest paths of the received signals. The new TOAs are used to refine the estimate of the location of the mobile terminal. In addition, the parameters of the search-back algorithm (e.g., a search-back threshold, timing windows) may be modified for greater accuracy in the estimated first path. The first arriving path estimate and the location estimate are iterated until convergence (e.g., the residuals are within a tolerance) or until a termination condition is reached, usually controlled by the thresholds setting.
摘要翻译：联合地和迭代地估计接收信号和移动终端位置的第一到达路径的方法使用残留位置误差。该方法可以包括设置测距阈值以减少残留位置误差。该方法迭代地估计接收信号和移动终端位置的第一到达路径，移动终端位置的估计改善了第一到达路径的估计，反之亦然。首先，峰值选择方法确定在多个不同固定终端中的每一个处接收到的信号的粗略到达时间（TOA）。然后提供移动单元的位置的估计（例如，基于最小二乘法（LS）三角测量）。如果剩余误差不能令人满意，则使用搜索回溯算法来改进TOA，其从所接收信号的最强路径中回溯。新的TOA用于改进移动终端位置的估计。此外，可以在估计的第一路径中更精确地修改搜索返回算法的参数（例如，搜索返回阈值，定时窗口）。迭代第一到达路径估计和位置估计直到收敛（例如，残差在容差内）或直到达到终止条件，通常由阈值设置来控制。

49. 发明授权

US09986440B2 Interference and mobility management in UAV-assisted wireless networks 有权
公开(公告)号：US09986440B2
公开(公告)日：2018-05-29
申请号：US15443147
申请日：2017-02-27
申请人： Ismail Guvenc
发明人： Ismail Guvenc
IPC分类号： H04M11/04 , H04W16/22 , H04B7/185 , H04W36/20 , H04W4/22 , H04W16/14 , H04W76/02 , H04W16/28 , H04W84/04
CPC分类号： H04W16/22 , H04B7/18504 , H04B7/18506 , H04W4/90 , H04W16/14 , H04W16/28 , H04W36/20 , H04W36/30 , H04W36/32 , H04W76/15 , H04W84/042
摘要： Techniques and systems are disclosed for addressing the challenges in interference and mobility management in broadband, UAV-assisted heterogeneous network (BAHN) scenarios. Implementations include BAHN control components, for example, at a controlling network node of a BAHN. Generally, a component implementing techniques for managing interference and handover in a BAHN gathers state data from network nodes or devices in the BAHN, determines a candidate BAHN model that optimizes interference and handover metrics, and determines and performs model adjustments to the network parameters, BS parameters, and UAV-assisted base station (UABS) device locations and velocities to conform to the optimized candidate BAHN model. Also described is a UABS apparatus having a UAV, communications interface for communicating with a HetNet in accordance with wireless air interface standards, and a computing device suitable for implementing BAHN control or reinforcement learning components.

50. 发明授权

US09883347B2 Specific velocity estimation of wireless network devices 有权
公开(公告)号：US09883347B2
公开(公告)日：2018-01-30
申请号：US15370213
申请日：2016-12-06
申请人： Arvind Merwaday , Ismail Guvenc
发明人： Arvind Merwaday , Ismail Guvenc
IPC分类号： H04W24/00 , H04W4/02 , H04W36/32 , H04W72/04 , H04W36/00
CPC分类号： H04W4/027 , H04W4/021 , H04W36/0083 , H04W36/0088 , H04W36/32 , H04W64/006 , H04W72/048
摘要： Techniques are disclosed for determining a specific velocity of a device attached to a wireless network. The specific velocity can be determined using a handover count of the base station boundary transitions over a time window and/or using a set of sojourn time samples that each denote the duration the device remains in the zone of a particular base station. Techniques operate effectively in cellular networks having high base station densities. The specific velocity estimates may be inputs to components on the device or network to adjust a local device function or performance behavior.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式