公开(公告)号：US08630598B2

公开(公告)日：2014-01-14

申请号：US12712330

申请日：2010-02-25

申请人： Rajiv Laroia ,  Juergen Cezanne ,  Aleksandar Jovicic

发明人： Rajiv Laroia ,  Juergen Cezanne ,  Aleksandar Jovicic

IPC分类号： H04B1/08

CPC分类号： H03D3/009 ,  H03D3/008 ,  H03D7/18

摘要： A wireless communications device, e.g., a mobile node supporting direct peer to peer communications, performs a self-calibration of one or more of: receiver IQ imbalance, transmitter IQ imbalance, receiver DC offset, and transmitter DC offset. The wireless communications device, operating in calibration mode, intentionally sets the oscillator frequency used for downconversion in its receiver module to a different frequency than the oscillator frequency used for upconversion in its transmitter module. A first baseband signal, e.g., a single tone test signal, is input to the transmitter module and an upconverted transmit signal is generated. The transmit signal is routed via a feedback loop to the receiver, which performs a downconversion operation. Power and/or phase measurements of the signals output from the downcoversion are used to determine IQ imbalance compensation information and DC offset compensation information. The determined compensation information is used subsequently when operating in a communications mode of operation.

摘要翻译： 无线通信设备，例如支持直接对等通信的移动节点，执行接收机IQ不平衡，发射机IQ不平衡，接收机DC偏移和发射机DC偏移中的一个或多个的自校准。 在校准模式下工作的无线通信设备将其接收机模块中用于下变频的振荡器频率有意地设置为与发射机模块中用于上变频的振荡器频率不同的频率。 将第一基带信号，例如单音测试信号输入到发射机模块，并产生上变频的发射信号。 发送信号通过反馈回路路由到接收机，接收机执行下变频操作。 用于从下变频输出的信号的功率和/或相位测量用于确定IQ不平衡补偿信息和DC偏移补偿信息。 当在通信操作模式下操作时，所确定的补偿信息被随后使用。

公开(公告)号：US20110207418A1

公开(公告)日：2011-08-25

申请号：US12712330

申请日：2010-02-25

申请人： Rajiv Laroia ,  Juergen Cezanne ,  Aleksandar Jovicic

发明人： Rajiv Laroia ,  Juergen Cezanne ,  Aleksandar Jovicic

IPC分类号： H04B1/40

CPC分类号： H03D3/009 ,  H03D3/008 ,  H03D7/18

摘要： A wireless communications device, e.g., a mobile node supporting direct peer to peer communications, performs a self-calibration of one or more of: receiver IQ imbalance, transmitter IQ imbalance, receiver DC offset, and transmitter DC offset. The wireless communications device, operating in calibration mode, intentionally sets the oscillator frequency used for downconversion in its receiver module to a different frequency than the oscillator frequency used for upconversion in its transmitter module. A first baseband signal, e.g., a single tone test signal, is input to the transmitter module and an upconverted transmit signal is generated. The transmit signal is routed via a feedback loop to the receiver, which performs a downconversion operation. Power and/or phase measurements of the signals output from the downcoversion are used to determine IQ imbalance compensation information and DC offset compensation information. The determined compensation information is used subsequently when operating in a communications mode of operation.

摘要翻译： 无线通信设备，例如支持直接对等通信的移动节点，执行接收机IQ不平衡，发射机IQ不平衡，接收机DC偏移和发射机DC偏移中的一个或多个的自校准。 在校准模式下工作的无线通信设备将其接收机模块中用于下变频的振荡器频率有意地设置为与发射机模块中用于上变频的振荡器频率不同的频率。 将第一基带信号，例如单音测试信号输入到发射机模块，并产生上变频的发射信号。 发送信号通过反馈回路路由到接收机，接收机执行下变频操作。 用于从下变频输出的信号的功率和/或相位测量用于确定IQ不平衡补偿信息和DC偏移补偿信息。 当在通信操作模式下操作时，所确定的补偿信息被随后使用。

公开(公告)号：US09049593B2

公开(公告)日：2015-06-02

申请号：US13536746

申请日：2012-06-28

申请人： Cyril Measson ,  Aleksandar Jovicic ,  Lei Zhang ,  Ivan Klimek ,  Thomas Joseph Richardson

发明人： Cyril Measson ,  Aleksandar Jovicic ,  Lei Zhang ,  Ivan Klimek ,  Thomas Joseph Richardson

IPC分类号： H04L9/32 ,  H04W12/04 ,  H04L9/08 ,  H04L29/06 ,  H04W16/28 ,  H04W84/12

CPC分类号： H04W12/04 ,  H04L9/088 ,  H04L63/068 ,  H04W16/28 ,  H04W84/12

摘要： Techniques for securing a coverage of a wireless system provided by a stationary or mobile node are disclosed. The node may be provided with at least one encryption key. The key may comprise an encryption function table having therein varying functions, such as time-varying physical layer functions, such as transmit power or beam shape/direction of the node. In accordance with the key, coverage associated with transmissions from the node may be varied.

摘要翻译： 公开了用于确保由固定或移动节点提供的无线系统的覆盖的技术。 节点可以被提供有至少一个加密密钥。 密钥可以包括其中具有变化的功能的加密功能表，诸如时变物理层功能，诸如节点的发射功率或波束形状/方向。 根据密钥，可以改变与来自节点的传输相关联的覆盖。

公开(公告)号：US08744487B2

公开(公告)日：2014-06-03

申请号：US13008965

申请日：2011-01-19

申请人： Aleksandar Jovicic ,  Cyril Measson ,  Thomas Richardson

发明人： Aleksandar Jovicic ,  Cyril Measson ,  Thomas Richardson

IPC分类号： H04W24/00

CPC分类号： G01S5/0226 ,  G01S5/0081 ,  G01S5/0252 ,  G01S5/0263 ,  H04W24/10 ,  H04W64/00

摘要： Methods and apparatus related to determining location of one or more mobile devices based on signals received by mobile device and signals received by fixed devices such as access points (APs) in a communications system are described. In accordance with various embodiments, mobile devices, e.g., peer devices, measure one or more signal characteristics, e.g., received signal power level, of signals received from peer devices and report this information along with information identifying the peer devices to which individual signal measurements correspond. The time of the signal measurements is also reported allowing a location determination server to time align signal measurements made by multiple different devices, e.g., mobile devices and access points, and use signals measurements from the multiple devices to determine the location of one or mobile devices, e.g., at one or more points in time, with more accuracy than if AP signal measurement alone were used.

摘要翻译： 描述了基于由移动设备接收的信号和由诸如通信系统中的接入点（AP）的固定设备接收的信号来确定一个或多个移动设备的位置的方法和装置。 根据各种实施例，移动设备（例如，对等设备）测量从对等设备接收的信号的一个或多个信号特性，例如接收的信号功率电平，并且将该信息与标识对等设备的信息一起报告给各个信号测量 对应。 还报告信号测量的时间，允许位置确定服务器时间对准由多个不同设备（例如，移动设备和接入点）进行的信号测量，并且使用来自多个设备的信号测量来确定一个或多个移动设备的位置 例如，在一个或多个时间点，比仅使用AP信号测量的精度更高。

公开(公告)号：US08514131B2

公开(公告)日：2013-08-20

申请号：US12875427

申请日：2010-09-03

申请人： Aleksandar Jovicic ,  Cyril Measson ,  Thomas Richardson

发明人： Aleksandar Jovicic ,  Cyril Measson ,  Thomas Richardson

IPC分类号： G01S5/02

CPC分类号： G01S5/0252 ,  G01S5/0236 ,  G01S5/0278

摘要： A mobile wireless device receives a set of fingerprint prediction maps, e.g., RF signal prediction maps, and corresponding probability metrics, e.g., indicative of map reliability. A fingerprint prediction map is an expected signal measurement map corresponding to a parameter or parameters to be measured and a area given a set of expected conditions. At different times, e.g., due to different conditions, a different map in the set of fingerprint prediction maps may be more likely to be accurate. The mobile wireless device updates the probability metrics, associated with different alternative maps in the set of maps, as a function of one or more of: known information, sensor readings, measurements, detected information, and position determination. The mobile wireless device determines its current position using fingerprint predication maps and one or more updated probability metrics.

摘要翻译： 移动无线设备接收一组指纹预测图，例如RF信号预测图，以及相应的概率度量，例如指示地图可靠性。 指纹预测图是与待测量的参数或参数对应的预期信号测量图，以及给定一组预期条件的区域。 在不同的时间，例如由于不同的条件，指纹预测图集合中的不同地图可能更准确。 根据以下中的一个或多个功能，移动无线设备更新与该组映射中的不同替代地图相关联的概率度量：已知信息，传感器读数，测量，检测信息和位置确定。 移动无线设备使用指纹预测映射和一个或多个更新的概率度量来确定其当前位置。

公开(公告)号：US20130183999A1

公开(公告)日：2013-07-18

申请号：US13350413

申请日：2012-01-13

申请人： Aleksandar Jovicic ,  Cyril Measson ,  Thomas J. Richardson

发明人： Aleksandar Jovicic ,  Cyril Measson ,  Thomas J. Richardson

IPC分类号： H04W64/00

CPC分类号： H04W64/00 ,  G01S5/0263 ,  G01S19/48 ,  H04W88/06

摘要： Various embodiments are directed to methods and apparatus for mobile device position determination and the efficient communication of mobile device position related information. In different areas different types of reference signals may be available to be used by a mobile device for position determination. Some types of references signal may be well suited for short range in an indoor environment, e.g., audio signals, Bluetooth signals and Wi-Fi signals, while other types of signals may be well suited for an outdoor environment, e.g., GPS signals and cellular base station signals. Different types of signals may facilitate different possible resolution accuracies for a position determination. In various embodiments, in different areas within a geographic coverage region, different sets of reference signals are available to be used by a mobile wireless device to determine its position. In some embodiments, different position determination resolutions are used in different area as a function of the reference signal type which is available.

摘要翻译： 各种实施例涉及用于移动设备位置确定的方法和装置以及移动设备位置相关信息的有效通信。 在不同的区域中，不同类型的参考信号可以由移动设备用于位置确定。 一些类型的参考信号可能非常适合于室内环境中的短距离，例如音频信号，蓝牙信号和Wi-Fi信号，而其它类型的信号可能非常适合室外环境，例如GPS信号和蜂窝 基站信号。 不同类型的信号可以促进用于位置确定的不同可能的分辨率精度。 在各种实施例中，在地理覆盖区域内的不同区域中，不同的参考信号组可用于移动无线设备用于确定其位置。 在一些实施例中，作为可用的参考信号类型的函数，在不同区域中使用不同的位置确定分辨率。

公开(公告)号：US20130065620A1

公开(公告)日：2013-03-14

申请号：US13231654

申请日：2011-09-13

申请人： Aleksandar Jovicic ,  Xinzhou Wu

发明人： Aleksandar Jovicic ,  Xinzhou Wu

IPC分类号： H04W64/00

CPC分类号： H04W8/005 ,  H04W84/18 ,  H04W88/04

摘要： Various methods and apparatus are directed to communicating peer discovery information in an efficient manner. A wireless device which has received peer discovery information from multiple peer devices in its vicinity combines received peer discovery information and transmits a signal communicating the combined information. In some embodiments, the combining includes performing a linear combination. The transmitted signal including the combined peer discovery information corresponding to multiple devices facilitates the recovery of peer discovery information by peer devices which may be out of direct peer to peer communications range to one of the devices whose information was used to produce the combined signal. Different peer devices may be able to recover different peer discovery information from the same combined signal. Thus the wireless device may effectively relay a first peer discovery message to one peer device and a second peer discovery message to another peer device via the same combined signal.

摘要翻译： 各种方法和装置旨在以有效的方式传送对等体发现信息。 已经从其附近的多个对等设备接收到对等体发现信息的无线设备组合了接收的对等体发现信息，并发送传送组合信息的信号。 在一些实施例中，组合包括执行线性组合。 包括对应于多个设备的组合对等体发现信息的发送信号有助于对等设备恢复对等体发现信息，该对等设备可能不在直接对等通信范围内，使用其信息来产生组合信号。 不同的对等设备可能能够从相同的组合信号中恢复不同的对等体发现信息。 因此，无线设备可以经由相同的组合信号有效地将第一对等体发现消息中继到一个对等设备，并将第二对等体发现消息中继到另一个对等设备。

公开(公告)号：US20120184301A1

公开(公告)日：2012-07-19

申请号：US13008965

申请日：2011-01-19

申请人： Aleksandar Jovicic ,  Cyril Measson ,  Thomas Richardson

发明人： Aleksandar Jovicic ,  Cyril Measson ,  Thomas Richardson

IPC分类号： H04W24/00 ,  H04W88/02 ,  H04W64/00

CPC分类号： G01S5/0226 ,  G01S5/0081 ,  G01S5/0252 ,  G01S5/0263 ,  H04W24/10 ,  H04W64/00

摘要： Methods and apparatus related to determining location of one or more mobile devices based on signals received by mobile device and signals received by fixed devices such as access points (APs) in a communications system are described. In accordance with various embodiments, mobile devices, e.g., peer devices, measure one or more signal characteristics, e.g., received signal power level, of signals received from peer devices and report this information along with information identifying the peer devices to which individual signal measurements correspond. The time of the signal measurements is also reported allowing a location determination server to time align signal measurements made by multiple different devices, e.g., mobile devices and access points, and use signals measurements from the multiple devices to determine the location of one or mobile devices, e.g., at one or more points in time, with more accuracy than if AP signal measurement alone were used.

摘要翻译： 描述了基于由移动设备接收的信号和由诸如通信系统中的接入点（AP）的固定设备接收的信号来确定一个或多个移动设备的位置的方法和装置。 根据各种实施例，移动设备（例如，对等设备）测量从对等设备接收的信号的一个或多个信号特性，例如接收的信号功率电平，并且将该信息与标识对等设备的信息一起报告给各个信号测量 对应。 还报告信号测量的时间，允许位置确定服务器时间对准由多个不同设备（例如，移动设备和接入点）进行的信号测量，并且使用来自多个设备的信号测量来确定一个或多个移动设备的位置 例如，在一个或多个时间点，比仅使用AP信号测量的精度更高。

公开(公告)号：US20120182144A1

公开(公告)日：2012-07-19

申请号：US13009779

申请日：2011-01-19

申请人： Thomas Richardson ,  Aleksandar Jovicic ,  Cyril Measson

发明人： Thomas Richardson ,  Aleksandar Jovicic ,  Cyril Measson

IPC分类号： G08B1/08

CPC分类号： G01S5/0252 ,  G01S5/0018 ,  G01S5/021 ,  H04W4/029 ,  H04W4/80

摘要： In accordance with various embodiments, mobile wireless devices which use prediction maps, e.g., RF prediction maps, to determine their location also contribute to the updating and distribution of parameters relating to prediction map generation. After a device determines its location, it uses the signal measurements used in determining the device's location to determine updated parameters which can be used in generating signal prediction maps in the future. The generated parameters are then transmitted to another device for use in generating prediction maps and/or distribution to other devices. In this manner parameters corresponding to a particular location can be updated and distributed without the need for a survey team and/or dedicated equipment. The devices using the prediction map become the devices which also aid in the updating of the parameters used to facilitate generation of a prediction map at some future time. In some embodiments, statistical information corresponding to the updated parameters is also generated and communicated.

摘要翻译： 根据各种实施例，使用预测图（例如RF预测图）来确定它们的位置的移动无线设备还有助于与预测图生成有关的参数的更新和分布。 在设备确定其位置之后，它使用用于确定设备位置的信号测量来确定将来可用于生成信号预测图的更新参数。 所产生的参数然后被发送到另一个设备，以用于生成预测图和/或分发给其他设备。 以这种方式，可以更新和分发对应于特定位置的参数，而不需要调查团队和/或专用设备。 使用预测图的装置成为也有助于更新用于在将来某个时间产生预测图的参数的装置。 在一些实施例中，还生成并传达与更新的参数对应的统计信息。