System and Method for Evaluating Wireless Device and/or Wireless Network Performance
US-2024422596-A1 · Dec 19, 2024 · US
Location sensing using channel fading fingerprinting
US9014718B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9014718-B2 |
| Application number | US-201113992832-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 8, 2011 |
| Priority date | Dec 8, 2011 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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Abstract
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A system and method are provided for providing precise location sensing for wireless devices in an indoor environment using channel fading fingerprinting. An indoor environment within which wireless devices are used is surveyed to develop a channel fading database for the indoor environment. The surveying of the indoor environment determines a specific channel fading profile according to 30 subcarrier frequencies in a wireless signal for numerous locations within the indoor environment. A wireless device scans for available wireless access points and extracts a channel fading profile for a current location of the wireless device. The extracted channel fading profile for the current location of the wireless device is compared with the channel fading database. A best match comparison between the extracted channel fading profile and the channel fading database is used to determine an actual physical location of the wireless device in the indoor environment.
First claim
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The invention claimed is: 1. A method for providing location sensing for wireless devices using channel fading fingerprinting, comprising: scanning wireless access points with a receiving wireless device; obtaining, with the receiving wireless device, a channel fading profile from at least one of the scanned wireless access points for a present location of the receiving wireless device; comparing the obtained channel fading profile for the present location of the receiving wir…
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- What does patent US9014718B2 cover?
- A system and method are provided for providing precise location sensing for wireless devices in an indoor environment using channel fading fingerprinting. An indoor environment within which wireless devices are used is surveyed to develop a channel fading database for the indoor environment. The surveying of the indoor environment determines a specific channel fading profile according to 30 sub…
- Who is the assignee on this patent?
- Yang Lei T, Yang Xue, Guo Xingang, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04W64/00. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 21 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).