公开(公告)号：WO2014100298A3

公开(公告)日：2014-10-09

申请号：PCT/US2013076319

申请日：2013-12-19

Applicant: QUALCOMM INC

Inventor： NAGUIB AYMAN FAWZY ,  BERGAN CHARLES A ,  PODURI SAMEERA ,  PAKZAD PAYAM

IPC: G01C17/38 ,  G01C21/20 ,  G01S5/16

CPC classification number: G01C21/08 ,  G01C17/38 ,  G01C21/206 ,  G01S5/0252 ,  G01S5/0263 ,  G01V3/15 ,  G01V3/40

Abstract: Disclosed are systems, methods and devices for application of measurements obtained from a compass or magnetometer in estimating a location of a mobile device. In specific implementations, expected signatures of local magnetic fields at locations are provided to a mobile device as positioning assistance data. In other implementations, magnetic measurements obtained by multiple mobile devices at identifiable locations in an indoor area may be combined for deriving expected signatures of local magnetic fields for use in positioning assistance data.

Abstract translation: 公开了用于在估计移动设备的位置时从罗盘或磁力计获得的测量值的应用的系统，方法和装置。 在具体实现中，将位置处的局部磁场的预期签名作为定位辅助数据提供给移动设备。 在其他实施方式中，可以组合多个移动设备在室内区域中的可识别位置处获得的磁测量，以得出用于定位辅助数据的局部磁场的预期签名。

公开(公告)号：WO2011085026A3

公开(公告)日：2011-09-09

申请号：PCT/US2011020256

申请日：2011-01-05

Applicant: QUALCOMM INC ,  SADEK AHMED K ,  ZHANG WENYI ,  JAIN AVINASH ,  SHELLHAMMER STEPHEN J ,  ARYAN BABAK ,  RAVEENDRAN VIJAYALAKSHMI ,  BERGAN CHARLES A

Inventor： SADEK AHMED K ,  ZHANG WENYI ,  JAIN AVINASH ,  SHELLHAMMER STEPHEN J ,  ARYAN BABAK ,  RAVEENDRAN VIJAYALAKSHMI ,  BERGAN CHARLES A

IPC: H04N5/44

CPC classification number: H04H20/33 ,  H04H20/30 ,  H04H60/07 ,  H04L5/005 ,  H04L5/0062 ,  H04N5/4401 ,  H04W16/14

Abstract: White space signals are differentiated from licensed ATSC signals through modification of a waveform of the white space signal. White space signals may be modified by shifting the ATSC-compatible waveform so that the pilot frequency of the white space signal is at a location outside of the frequency range associated with the pilot frequency in a licensed ATSC signal or embedding a watermark signal into said ATSC-like white space signals. White space device transmitters generate the signals with these modifications and white space receivers are equipped to detect whether a pilot exists in the standard licensed pilot frequencies. Based on these differences, white space devices can better operate without interfering with licensed ATSC transmission. Additionally, the modification techniques may be used to embed data in the white space signal that may be used to communicate connection data or networking data to other white space devices.

Abstract translation: 通过修改白色空间信号的波形，将白色空间信号与许可的ATSC信号区分开来。 可以通过移动ATSC兼容波形来修改空白信号，使得空白空间信号的导频位于与许可的ATSC信号中的导频相关联的频率范围之外的位置，或者将水印信号嵌入到所述ATSC 类白色空间信号。 白色空间设备发射机通过这些修改产生信号，白色空间接收机用于检测标准许可导频中是否存在导频。 基于这些差异，白色空间设备可以更好地运行而不会干扰许可的ATSC传输。 另外，修改技术可以用于将数据嵌入到可用于将连接数据或网络数据传送给其他空白空间设备的空白空间信号中。