公开(公告)号：US09338034B2

公开(公告)日：2016-05-10

申请号：US14049256

申请日：2013-10-09

Applicant: QUALCOMM Incorporated

Inventor： Siavash Ekbatani ,  Alok Kumar Gupta

IPC: H04L25/02 ,  H04L25/49 ,  G01S5/06 ,  G01S5/00 ,  G01S5/02 ,  G01S11/08 ,  G06Q10/00 ,  H04W64/00 ,  G08B21/02

CPC classification number: H04L25/024 ,  G01S5/00 ,  G01S5/0205 ,  G01S5/0215 ,  G01S5/0221 ,  G01S5/0226 ,  G01S5/06 ,  G01S11/08 ,  G06Q10/00 ,  G08B21/0272 ,  H04L25/0226 ,  H04L25/4923 ,  H04W64/00

Abstract: Methods, systems, and devices for channel estimation in a location tracking system are described. The methods, system, and devices may include tools and techniques for determining and/or designing perfect or semi-perfect sequences (including preamble sequences) for implementation in a location tracking system. Sequences having 2's exponent dimensionality, such as ternary sequences, may be determined and employed, which may help reduce implementation complexity and/or operating power consumption. Sequences may be determined using mean square error and/or maximum autocorrelation peak performance metrics.

Abstract translation: 描述了位置跟踪系统中用于信道估计的方法，系统和设备。 方法，系统和装置可以包括用于确定和/或设计用于在位置跟踪系统中实现的完美或半完美序列（包括前导码序列）的工具和技术。 可以确定并采用具有2个指数维数的序列，例如三进制序列，这有助于降低实现复杂度和/或操作功耗。 序列可以使用均方误差和/或最大自相关峰性能度量来确定。

公开(公告)号：US20150094082A1

公开(公告)日：2015-04-02

申请号：US14042634

申请日：2013-09-30

Applicant: QUALCOMM INCORPORATED

Inventor： Alok Kumar Gupta ,  Siavash Ekbatani

IPC: H04W64/00 ,  H04L25/03 ,  H04L25/02

CPC classification number: H04W64/00 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0216 ,  H04L25/0224 ,  H04L25/03

Abstract: Methods, systems, and devices for channel estimation and/or earliest path detection in a location tracking system are described. The described tools and techniques may involve accumulation of energy of multiple copies of a periodic sequence, which may be contained and/or associated with a signal transmitted from a location tracking tag. One or more access points within the location tracking system may receive and process multiple copies of the sequence, employing period-wise coherent accumulation, and estimate an earliest path, or a corresponding delay associated with an earliest path, of the sequence. The access point(s) may transmit information related to the earliest path, including the corresponding delay, to a tracking management server, which may use the information to estimate and/or determine a location of a tag.

Abstract translation: 描述了位置跟踪系统中用于信道估计和/或最早路径检测的方法，系统和设备。 所描述的工具和技术可以涉及可以包含和/或与从位置跟踪标签发送的信号相关联的周期性序列的多个副本的能量的累积。 位置跟踪系统内的一个或多个接入点可以接收和处理序列的多个副本，采用周期性相干累加，并估计序列的最早路径或与最早路径相关联的对应延迟。 接入点可将与最早路径相关的信息（包括相应的延迟）发送到跟踪管理服务器，跟踪管理服务器可以使用该信息来估计和/或确定标签的位置。

公开(公告)号：US20150092754A1

公开(公告)日：2015-04-02

申请号：US14042449

申请日：2013-09-30

Applicant: QUALCOMM Incorporated

Inventor： Alok Kumar Gupta

IPC: H04W56/00 ,  H04W4/04

CPC classification number: H04W56/0015 ,  H04B7/2687 ,  H04W4/04 ,  H04W56/001 ,  H04W56/0035

Abstract: Methods, systems, and devices for synchronizing a position location network. The methods, systems, and/or devices may provide for designating as a master AP one AP from a network. The master AP may broadcast synchronization signals, which other APs in the network may use to synchronize their respective oscillators and/or clocks. In some cases, the master AP and/or a network server (e.g., a tracking management server) may designate acting master APs. The acting master APs may, for example, broadcast synchronization signals to neighboring APs. The acting master APs and/or the master AP may maintain lists of synchronized APs, which may be transmitted among APs and/or to a network server.

Abstract translation: 用于同步位置定位网络的方法，系统和设备。 方法，系统和/或设备可以提供从网络指定为主AP一个AP。 主AP可以广播同步信号，网络中的其他AP可以使用同步信号来同步它们各自的振荡器和/或时钟。 在某些情况下，主AP和/或网络服务器（例如，跟踪管理服务器）可以指定代理主AP。 作用主AP可以例如向相邻AP广播同步信号。 代理主AP和/或主AP可以维护同步AP的列表，其可以在AP和/或网络服务器之间传送。

公开(公告)号：US09408172B2

公开(公告)日：2016-08-02

申请号：US14042449

申请日：2013-09-30

Applicant: QUALCOMM Incorporated

Inventor： Alok Kumar Gupta

IPC: H04W56/00 ,  H04W4/04 ,  H04B7/26

CPC classification number: H04W56/0015 ,  H04B7/2687 ,  H04W4/04 ,  H04W56/001 ,  H04W56/0035

Abstract: Methods, systems, and devices for synchronizing a position location network. The methods, systems, and/or devices may provide for designating as a master AP one AP from a network. The master AP may broadcast synchronization signals, which other APs in the network may use to synchronize their respective oscillators and/or clocks. In some cases, the master AP and/or a network server (e.g., a tracking management server) may designate acting master APs. The acting master APs may, for example, broadcast synchronization signals to neighboring APs. The acting master APs and/or the master AP may maintain lists of synchronized APs, which may be transmitted among APs and/or to a network server.

Abstract translation: 用于同步位置定位网络的方法，系统和设备。 方法，系统和/或设备可以提供从网络指定为主AP一个AP。 主AP可以广播同步信号，网络中的其他AP可以使用同步信号来同步它们各自的振荡器和/或时钟。 在某些情况下，主AP和/或网络服务器（例如，跟踪管理服务器）可以指定代理主AP。 作用主AP可以例如向相邻AP广播同步信号。 代理主AP和/或主AP可以维护同步AP的列表，其可以在AP和/或网络服务器之间传送。

公开(公告)号：US09107043B2

公开(公告)日：2015-08-11

申请号：US14042442

申请日：2013-09-30

Applicant: QUALCOMM Incorporated

Inventor： Alok Kumar Gupta

IPC: H04W24/00 ,  H04W4/04 ,  H04W64/00 ,  G01S5/00

CPC classification number: H04W4/04 ,  G01S5/00 ,  G01S5/0242 ,  G01S5/0289 ,  H04W64/00 ,  H04W64/003

Abstract: Methods, systems, and devices are described for determining and updating coordinates of access points (APs) within a location tracking system. Tools and techniques are described that may provide for automatically determining a coordinate set, which represents coordinates of at least three neighboring APs within a location tracking area. These techniques may be utilized at the time of the APs' deployment and/or when APs are moved or relocated to a new location. The methods, systems, and devices may be applicable to single- and multi-floor location tracking systems. Coordinate and/or coordinate sets of APs may be stored in a location tracking server, and they may used in determining a location of tracking tags with the location tracking area. The stored coordinates and/or coordinate sets may be updated as the location of APs change.

Abstract translation: 描述了用于确定和更新位置跟踪系统内的接入点（AP）的坐标的方法，系统和设备。 描述了可以提供自动确定表示位置跟踪区域内的至少三个相邻AP的坐标的坐标集的工具和技术。 这些技术可以在AP的部署时和/或当AP被移动或重定位到新的位置时使用。 方法，系统和设备可能适用于单层和多层位置跟踪系统。 AP的坐标和/或坐标集可以存储在位置跟踪服务器中，并且它们可以用于确定具有位置跟踪区域的跟踪标签的位置。 存储的坐标和/或坐标集可以随着AP的位置而改变。

公开(公告)号：US09084087B2

公开(公告)日：2015-07-14

申请号：US13966079

申请日：2013-08-13

Applicant: QUALCOMM Incorporated

Inventor： Siavash Ekbatani ,  Alok Kumar Gupta ,  Yih-Hao Lin

IPC: H04W4/04 ,  H04B1/7163 ,  G01S5/02 ,  G01S11/08 ,  G01S5/14

CPC classification number: H04W4/04 ,  G01S5/0215 ,  G01S5/0221 ,  G01S5/14 ,  G01S11/08 ,  H04B1/7163

Abstract: Methods, systems, and devices for detecting earliest channel path and/or determining time of arrival of signals in location tracking systems are described. An ultra-wideband (UWB) signal may be received from a tag. A noise estimation level above which the UWB signal is detectable may be determined using a noise estimation metric. A channel impulse response (IR) energy level may be determined using a channel energy metric. A leading edge window of the UWB signal may be identified. The leading edge window may be based on, at least in part, the noise estimation level and the channel IR energy level.

Abstract translation: 描述了用于检测最早通道路径和/或确定位置跟踪系统中的信号到达时间的方法，系统和设备。 可以从标签接收超宽带（UWB）信号。 可以使用噪声估计度量来确定高于该噪声估计水平的UWB信号是可检测的。 可以使用信道能量度量来确定信道脉冲响应（IR）能级。 可以识别UWB信号的前沿窗口。 前沿窗口可以至少部分地基于噪声估计水平和信道IR能量水平。

公开(公告)号：US20150092821A1

公开(公告)日：2015-04-02

申请号：US14042537

申请日：2013-09-30

Applicant: QUALCOMM Incorporated

Inventor： Alok Kumar Gupta ,  Siavash Ekbatani

IPC: H04B1/719 ,  H04B1/7163

CPC classification number: H04B1/719 ,  H04B1/71637

Abstract: Methods, systems, and devices for maximizing signal to interference plus noise ratio of a channel in a location tracking system. The methods, systems, and device may include tools and techniques for minimizing interference from adjacent samples at a receive filter, may include relaxing constraints at a transmitter. A receive filter or set of receive, or both, filters may be determined and utilized by specifying and or determining various transmitter, receiver, and channel characteristics. The receive filter and set of filters may be determined through an iterative approach involving one or more solution metrics.

Abstract translation: 用于最大化位置跟踪系统中信道的信噪比加噪声比的方法，系统和设备。 方法，系统和设备可以包括用于最小化在接收滤波器处的相邻采样的干扰的工具和技术，可以包括在发射机处的放松约束。 可以通过指定和/或确定各种发射机，接收机和信道特性来确定和利用接收滤波器或接收集合或两者的滤波器。 接收滤波器和滤波器组可以通过涉及一个或多个解决度量的迭代方法来确定。

公开(公告)号：US09363776B2

公开(公告)日：2016-06-07

申请号：US14042446

申请日：2013-09-30

Applicant: QUALCOMM Incorporated

Inventor： Alok Kumar Gupta ,  William E. Stein ,  Scott Howard King

IPC: H04W56/00 ,  H04B7/26

CPC classification number: H04W56/001 ,  H04B7/2687 ,  H04W56/002 ,  H04W56/0035

Abstract: Methods, systems, and devices are described that provide for high precision synchronization between pairs of APs within a tracking area of a position location network. These tools and techniques may provide for incrementally synchronizing timers and oscillators located at respective APs. An AP may transmit a course frequency and timing acquisition signal that a second AP utilizes to estimate a frequency offset and/or time offset. The AP may transmit a subsequent fine frequency and timing acquisition signal which may be used to accurately adjust the estimated frequency offset and/or time offset of the second AP. The second AP may thus incrementally synchronize its oscillator(s) and/or timer(s). These techniques may be utilized over a multi-hop wireless network. The methods, systems, and devices may be applicable to single- and multi-floor location tracking systems.

Abstract translation: 描述了提供位置定位网络的跟踪区域内的AP对之间的高精度同步的方法，系统和设备。 这些工具和技术可以提供定位器和位于相应AP处的振荡器的增量同步。 AP可以发送第二AP利用的路线频率和定时获取信号来估计频率偏移和/或时间偏移。 AP可以发送随后的精细频率和定时获取信号，其可以用于精确地调整第二AP的估计频率偏移和/或时间偏移。 因此，第二AP可以递增地同步其振荡器和/或定时器。 这些技术可以在多跳无线网络上使用。 方法，系统和设备可能适用于单层和多层位置跟踪系统。

公开(公告)号：US20150098345A1

公开(公告)日：2015-04-09

申请号：US14049256

申请日：2013-10-09

Applicant: Qualcomm Incorporated

Inventor： Siavash Ekbatani ,  Alok Kumar Gupta

IPC: H04L25/02 ,  H04W64/00

CPC classification number: H04L25/024 ,  G01S5/00 ,  G01S5/0205 ,  G01S5/0215 ,  G01S5/0221 ,  G01S5/0226 ,  G01S5/06 ,  G01S11/08 ,  G06Q10/00 ,  G08B21/0272 ,  H04L25/0226 ,  H04L25/4923 ,  H04W64/00

Abstract: Methods, systems, and devices for channel estimation in a location tracking system are described. The methods, system, and devices may include tools and techniques for determining and/or designing perfect or semi-perfect sequences (including preamble sequences) for implementation in a location tracking system. Sequences having 2's exponent dimensionality, such as ternary sequences, may be determined and employed, which may help reduce implementation complexity and/or operating power consumption. Sequences may be determined using mean square error and/or maximum autocorrelation peak performance metrics.

Abstract translation: 描述了位置跟踪系统中用于信道估计的方法，系统和设备。 方法，系统和装置可以包括用于确定和/或设计用于在位置跟踪系统中实现的完美或半完美序列（包括前导码序列）的工具和技术。 可以确定并采用具有2个指数维数的序列，例如三进制序列，这有助于降低实现复杂度和/或操作功耗。 序列可以使用均方误差和/或最大自相关峰性能度量来确定。

公开(公告)号：US20150091702A1

公开(公告)日：2015-04-02

申请号：US14038882

申请日：2013-09-27

Applicant: QUALCOMM Incorporated

Inventor： Alok Kumar Gupta ,  Srinivas Chilukuri ,  Scott Howard King

IPC: G06K7/10

CPC classification number: G06K7/10366 ,  G06K7/10207 ,  G06K7/10306 ,  H04W4/029 ,  H04W52/0254 ,  H04W64/00 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162

Abstract: Methods, systems, and devices for automatically changing the manner in which a tag unit communicates with one or more access points based on the tag unit's mobility state are described. A tag unit may transmit ultra-wideband (UWB) signals in a low update mode while in a stationary state. The tag unit may transmit UWB signals in a high update mode while in a mobile state. The tag unit, an access point, and/or a tracking management server may determine a tag unit's mobility state and adjust an update mode based on the mobility state.

Abstract translation: 描述用于基于标签单元的移动性状态自动改变标签单元与一个或多个接入点通信的方式，系统和设备。 标签单元可以在处于静止状态的低更新模式下传输超宽带（UWB）信号。 标签单元可以在移动状态下以高更新模式发送UWB信号。 标签单元，接入点和/或跟踪管理服务器可以确定标签单元的移动性状态，并且基于移动性状态来调整更新模式。