公开(公告)号：US20140187257A1

公开(公告)日：2014-07-03

申请号：US13733648

申请日：2013-01-03

Applicant: QUALCOMM INCORPORATED

Inventor： Amir A. EMADZADEH ,  Sai Pradeep VENKATRAMAN ,  Weihua GAO

IPC: H04W4/04

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

Abstract: Techniques are provided for utilizing one or more mobile devices to estimate distances between wireless access points (APs). Embodiments can, for example, enable mobile devices, wireless APs, and/or other systems to estimate a distance between two wireless APs using Round-Trip Time (RTT) measurements obtained by one or more mobile devices. The RTT measurements can be utilized based on whether one or more related Received Signal Strength Indication (RSSI) measurements exceed a threshold value. Embodiments can also utilize crowdsourcing to obtain distance estimation data (e.g., distance estimates, RTT and/or RSSI measurements, etc.) from one or more mobile devices and/or propagate a determined distance, based on the distance estimation data, to multiple devices.

Abstract translation: 提供了用于利用一个或多个移动设备来估计无线接入点（AP）之间的距离的技术。 实施例可以例如使得移动设备，无线AP和/或其他系统能够使用由一个或多个移动设备获得的往返时间（RTT）测量来估计两个无线AP之间的距离。 可以基于一个或多个相关接收信号强度指示（RSSI）测量是否超过阈值来利用RTT测量。 实施例还可以利用众包从一个或多个移动设备获得距离估计数据（例如，距离估计，RTT和/或RSSI测量等）和/或基于距离估计数据将确定的距离传播到多个设备 。