Wireless-based positioning without association
    1.
    发明授权
    Wireless-based positioning without association 有权
    基于无线定位无关联

    公开(公告)号:US08626196B2

    公开(公告)日:2014-01-07

    申请号:US13462322

    申请日:2012-05-02

    IPC分类号: H04W24/00

    CPC分类号: H04W64/00 H04W48/12

    摘要: A wireless location assist device (WLAD) comprises control logic and a wireless radio coupled to the control logic. The control logic causes the radio to perform at least one of wireless local area network (WLAN) beacon transmission and WLAN probe request receipt and response. The control logic never permits the WLAD to associate with a wireless station.

    摘要翻译: 无线定位辅助装置(WLAD)包括控制逻辑和耦合到控制逻辑的无线无线电。 控制逻辑使得无线电装置执行无线局域网(WLAN)信标传输和WLAN探测请求接收和响应中的至少一个。 控制逻辑从不允许WLAD与无线站相关联。

    Fine time assistance for global navigation satellite systems
    2.
    发明授权
    Fine time assistance for global navigation satellite systems 有权
    全球导航卫星系统的精细时间协助

    公开(公告)号:US09182493B2

    公开(公告)日:2015-11-10

    申请号:US13415609

    申请日:2012-03-08

    IPC分类号: G01S19/25 G01S19/05 H04W56/00

    摘要: Apparatus and method for providing fine timing assistance to global navigation satellite systems (GNSS) via wireless local area network (WLAN). In one embodiment, a method for synchronizing a global navigation satellite system (GNSS) receiver includes receiving, by a wireless device, via a wireless local area network (WLAN), fine time assistance information transmitted by an assisting device connected to the WLAN. A time value of a GNSS clock of the wireless device is adjusted based on the fine time assistance information. Based on the adjusted time value, GNSS codes of a GNSS positioning signal are acquired by the wireless device.

    摘要翻译: 通过无线局域网(WLAN)向全球导航卫星系统(GNSS)提供精确时序辅助的装置和方法。 在一个实施例中,用于同步全球导航卫星系统(GNSS)接收机的方法包括经由无线局域网(WLAN)由无线设备接收由连接到WLAN的辅助设备发送的精细时间辅助信息。 基于精细时间辅助信息来调整无线装置的GNSS时钟的时间值。 基于调整后的时间值,通过无线装置获取GNSS定位信号的GNSS码。

    Method for GNSS coexistence
    3.
    发明授权
    Method for GNSS coexistence 有权
    GNSS共存方法

    公开(公告)号:US08456358B2

    公开(公告)日:2013-06-04

    申请号:US13306038

    申请日:2011-11-29

    IPC分类号: G01S19/21

    CPC分类号: G01S19/21

    摘要: A method for operating a wireless transmitter and a global navigation satellite (“GNSS”) receiver coexistent in a mobile wireless device. A mobile wireless device includes a GNSS receiver and a wireless networking system. The wireless networking system includes a wireless transmitter. The wireless transmitter provides a first interference level signal to the GNSS receiver. The first interference level signal indicates a level of interference that the GNSS receiver can expect due to operation of the transmitter. A priority signal is asserted if the processing of navigation signals in the GNSS receiver takes precedence over wireless transmitter transmissions.

    摘要翻译: 一种用于操作在移动无线设备中共存的无线发射机和全球导航卫星(“GNSS”)接收机的方法。 移动无线设备包括GNSS接收机和无线联网系统。 无线网络系统包括无线发射机。 无线发射机向GNSS接收机提供第一干扰电平信号。 第一干扰电平信号指示GNSS接收机由于发射机的操作而能够预期的干扰水平。 如果GNSS接收机中的导航信号的处理优先于无线发射机传输,则优先信号被断言。

    System and method for hybrid positioning using Wi-Fi and GNSS blending
    4.
    发明授权
    System and method for hybrid positioning using Wi-Fi and GNSS blending 有权
    使用Wi-Fi和GNSS融合进行混合定位的系统和方法

    公开(公告)号:US08738035B1

    公开(公告)日:2014-05-27

    申请号:US13728992

    申请日:2012-12-27

    IPC分类号: H04W4/02

    CPC分类号: G01S19/48

    摘要: System and method for hybrid positioning using blended Wi-Fi and GNSS solution is presented, which provides an overall good positioning accuracy as compared to feed forward blending solution. Feeding back Wi-Fi and GNSS blended solutions to replace position states in GNSS enables blended solution to improve using past Wi-Fi information and also enables early correction of GPS drifts in urban canyons. Smart blending prevents early degradation of blended solution due to bad Wi-Fi information. Additionally, it gives good performance in open sky and mild urban canyons where GPS performance is generally quite good. Constrained blending enables good blending even with dependent or clustered Wi-Fi positions. It also keeps feedback loop stable by limiting changes to a blended solution.

    摘要翻译: 提出了使用混合Wi-Fi和GNSS解决方案进行混合定位的系统和方法,与前馈混合解决方案相比,提供了整体良好的定位精度。 回馈Wi-Fi和GNSS混合解决方案以替代GNSS中的位置状态,使混合解决方案能够改进使用过去的Wi-Fi信息,并且可以早日校正城市峡谷中的GPS漂移。 智能混合可防止混合解决方案由于Wi-Fi信息不良而导致的早期劣化。 此外,它在晴朗的天空和温和的城市峡谷中表现出色,GPS性能通常相当不错。 约束混合使得即使使用依赖或集群的Wi-Fi位置也能进行良好的混合。 它还通过限制对混合解决方案的更改来保持反馈环路稳定。

    Power-saving receiver circuits, systems and processes
    5.
    发明授权
    Power-saving receiver circuits, systems and processes 有权
    省电接收器电路,系统和过程

    公开(公告)号:US08331898B2

    公开(公告)日:2012-12-11

    申请号:US12244060

    申请日:2008-10-02

    IPC分类号: H04B1/16

    CPC分类号: H04B1/1615 G01S19/34

    摘要: An electronic circuit includes a receiver circuit (BSP) operable to perform coherent summations having a coherent summations time interval, and a power control circuit (2130) coupled to said receiver circuit (BSP) and operable to impress a power controlling duty cycle (TON, TOFF) on the receiver circuit (BSP) inside the coherent summations time interval. Other circuits, devices, systems, methods of operation and processes of manufacture are also disclosed.

    摘要翻译: 电子电路包括可操作以执行具有相干求和时间间隔的相干相加的接收器电路(BSP)和耦合到所述接收器电路(BSP)的功率控制电路(2130),并且可操作以将功率控制占空比(TON, TOFF)在相干求和时间间隔内的接收机电路(BSP)上。 还公开了其它电路,装置,系统,操作方法和制造方法。

    Robust detection of packet types
    6.
    发明授权
    Robust detection of packet types 有权
    分组类型的鲁棒检测

    公开(公告)号:US07957474B2

    公开(公告)日:2011-06-07

    申请号:US11618432

    申请日:2006-12-29

    IPC分类号: H04K1/10

    摘要: Disclosed herein is a system and method for determining the presence of rotated-BPSK modulation. In addition, disclosed herein is a system and method for determining if a received packet is a Legacy, Mixed-Mode, or Green-Field packet in accordance with the determination of the presence of rotated-BPSK modulation. The presence of a Green-Field packet may be determined by detecting if additional tones are being excited in an LTF symbol of the received packet and/or if a SIG field symbol following the LTF symbol is modulated by rotated-BPSK. The presence of a Mixed-Mode packet may be determined by detecting if the first four bits of the SIG field symbol following the LTF symbol are [1 1 0 1] and/or detecting if a symbol following an L-SIG symbol is modulated by rotated-BPSK. The presence of a Legacy packet may be determined by detecting if the symbol following the L-SIG symbol is modulated by BPSK.

    摘要翻译: 本文公开了一种用于确定旋转BPSK调制的存在的系统和方法。 此外,本文所公开的是根据确定旋转BPSK调制的确定来确定接收的分组是传统的,混合模式的还是绿色场分组的系统和方法。 可以通过检测在接收到的分组的LTF符号中是否激励附加音调和/或如果通过旋转BPSK调制LTF符号之后的SIG字段符号,则可以确定绿场分组的存在。 混合模式分组的存在可以通过检测LTF符号之后的SIG字段符号的前四位是否为[1×10 1]和/或检测在L-SIG符号之后的符号是否被 旋转BPSK。 可以通过检测L-SIG符号之后的符号是否被BPSK调制来确定遗留分组的存在。

    METHOD FOR INCORPORATING INVISIBLE ACCESS POINTS FOR RSSI-BASED INDOOR POSITIONING APPLICATIONS
    7.
    发明申请
    METHOD FOR INCORPORATING INVISIBLE ACCESS POINTS FOR RSSI-BASED INDOOR POSITIONING APPLICATIONS 有权
    用于基于RSSI的室内定位应用的无用接入点的方法

    公开(公告)号:US20140185472A1

    公开(公告)日:2014-07-03

    申请号:US13901777

    申请日:2013-05-24

    IPC分类号: H04W4/02

    CPC分类号: H04W4/023 H04W4/043 H04W4/33

    摘要: A method for incorporating invisible APs for RSSI based indoor positioning is presented. An empirical estimate of the probability of invisible APs versus distance is computed. An estimated position of the receiver can be computed using any statistical estimator based on the probability. In one embodiment, an estimate of the probability is computed by combining the probability over a set of visible APs and the probability over a set of invisible APs with the probability of individual contribution. In one embodiment a dynamic procedure is used to update the invisible probability that is computed using an AP dictionary built on the fly as new APs are detected. Incorporating invisible APs for estimating user position from the RSSI measurements for indoor positioning provides a better positioning accuracy as compared to typical estimators which rely only on the visible APs.

    摘要翻译: 提出了一种融合基于RSSI室内定位的隐形AP的方法。 计算不可见AP与距离概率的经验估计。 可以使用基于概率的任何统计估计器来计算接收机的估计位置。 在一个实施例中,通过将一组可见AP的概率与具有个体贡献的概率的一组不可见的AP组合的概率来计算概率的估计。 在一个实施例中,使用动态过程来更新在检测到新的AP时,使用在飞行中构建的AP字典来计算的不可见概率。 与仅依赖于可见AP的典型估计器相比,结合用于从室内定位的RSSI测量中估计用户位置的不可见AP提供更好的定位精度。

    Position and Velocity Uncertainty Metrics in GNSS Receivers
    8.
    发明申请
    Position and Velocity Uncertainty Metrics in GNSS Receivers 有权
    GNSS接收机的位置和速度不确定度量

    公开(公告)号:US20110156954A1

    公开(公告)日:2011-06-30

    申请号:US12648846

    申请日:2009-12-29

    IPC分类号: G01S19/30

    CPC分类号: G01S19/22 G01S19/40

    摘要: A GNSS navigation system and navigation method for determining user position, user velocity, and improved uncertainty metrics for position and velocity. A measurement engine in an applications processor of the system determines pseudorange and delta range values over each time period for each received satellite signal, and also determines measurement noise variances for both pseudorange and delta range for the individual signals. The satellite-specific pseudorange and delta range measurement variances are used to determine the position and velocity uncertainties by a position engine, either by way of a least-squares linearization or by way of an enhanced Kalman filter. The uncertainties may be communicated to the system user, or used in generating an integrated position and velocity result from both the GNSS navigation function and an inertial navigation system result.

    摘要翻译: 用于确定用户位置,用户速度和改善位置和速度的不确定性度量的GNSS导航系统和导航方法。 系统的应用处理器中的测量引擎在每个接收到的卫星信号的每个时间段上确定伪距和增量范围值,并且还确定各个信号的伪距和Δ范围的测量噪声方差。 卫星专用伪距和增量范围测量方差用于通过最小二乘法线性化或通过增强卡尔曼滤波器来确定位置引擎的位置和速度不确定度。 不确定性可以传达给系统用户,或者用于从GNSS导航功能和惯性导航系统结果生成集成位置和速度结果。

    POSITION ENGINE (PE) FEEDBACK TO IMPROVE GNSS RECEIVER PERFORMANCE
    9.
    发明申请
    POSITION ENGINE (PE) FEEDBACK TO IMPROVE GNSS RECEIVER PERFORMANCE 审中-公开
    位置发动机(PE)反馈,以提高GNSS接收机性能

    公开(公告)号:US20100171659A1

    公开(公告)日:2010-07-08

    申请号:US12712520

    申请日:2010-02-25

    IPC分类号: G01S19/37

    CPC分类号: H04B17/24 G01S19/34

    摘要: Embodiments of the invention provide a method for making information in the position engine (PE) available to the measurement engine (ME). With the right information the ME can reduce its power consumption, and improve its performance. Other circuits, devices, systems, methods of operation and processes of manufacture are also disclosed.

    摘要翻译: 本发明的实施例提供了一种用于在可用于测量引擎(ME)的位置引擎(PE)中进行信息的方法。 使用正确的信息,ME可以降低其功耗,并提高其性能。 还公开了其它电路,装置,系统,操作方法和制造方法。