The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2019
Filed:
Feb. 01, 2018
Applicant:
Cisco Technology, Inc., San Jose, CA (US);
Inventors:
Jagdish Girimaji, Pleasanton, CA (US);
Santosh Ghanshyam Pandey, Fremont, CA (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04W 24/00 (2009.01); G01S 1/06 (2006.01); H04W 64/00 (2009.01); G01S 1/72 (2006.01); G01S 1/70 (2006.01); H04B 17/318 (2015.01);
U.S. Cl.
CPC ...
G01S 1/06 (2013.01); G01S 1/70 (2013.01); G01S 1/72 (2013.01); H04B 17/318 (2015.01); H04W 64/00 (2013.01);
Abstract
In one embodiment, a device in a network receives a radio frequency (RF) beacon. The device determines a received signal strength indication (RSSI) of the received RF beacon. The device compares the determined RSSI to an RSSI threshold. The device sends a burst of ultrasound or infrared beacons when the determined RSSI of the RF beacon exceeds the RSSI threshold. The burst of ultrasound or infrared beacons is then used by a location service in the network to determine a physical location of the device.