Invention Grant
- Patent Title: Use of RF signatures to detect moved wireless transmitters
- Patent Title (中): 使用RF签名来检测移动的无线发射机
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Application No.: US14284860Application Date: 2014-05-22
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Publication No.: US09439168B2Publication Date: 2016-09-06
- Inventor: Douglas Neal Rowitch
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Hunter Clark PLLC
- Main IPC: H04W64/00
- IPC: H04W64/00 ; H04W4/02 ; H04B17/00 ; G01S5/02

Abstract:
Location-independent approaches are provided for determining, using a mobile device, whether a wireless transmitter has been moved to a new location. An example method includes obtaining at least a portion of a reference radio frequency (RF) signature database; measuring signals from a plurality of wireless transmitters proximate to the mobile device; identifying a candidate wireless transmitter; deriving an observed radio frequency (RF) signature for the candidate wireless transmitter from signals from at least one wireless transmitter of the plurality of wireless transmitters other than the candidate wireless transmitter; determining whether the candidate wireless transmitter has been moved to a new location by comparing the observed RF signature for the candidate wireless transmitter to a reference RF signature associated with the candidate wireless transmitter; and generating an indicator that the candidate wireless transmitter has been moved responsive to the candidate wireless transmitter having been moved.
Public/Granted literature
- US20150341894A1 USE OF RF SIGNATURES TO DETECT MOVED WIRELESS TRANSMITTERS Public/Granted day:2015-11-26
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