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US 10,197,661 B1Granted
Infrastructure enabled smart dual-mode tags
AssigneeCisco Technology, Inc.
InventorsJagdish Girimaji, Santosh Ghanshyam Pandey
Life of this patent
Estimating the term…
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.
Claims18
A method comprising:
- receiving, at a device in a network, a radio frequency (RF) beacon;
- determining, by the device, a received signal strength indication (RSSI) of the received RF beacon;
- comparing, by the device, the determined RSSI to an RSSI threshold;
- sending, by the device, a burst of ultrasound or infrared beacons when the determined RSSI of the RF beacon exceeds the RSSI threshold, wherein the burst of ultrasound or infrared beacons is used by a location service in the network to determine a physical location of the device;
- sending, by the device, an RF notification to the network indicative of the burst of ultrasound or infrared beacons, wherein the location service determines an adjusted RSSI threshold for the device based in part on whether the indicated burst of beacons were actually received by the network;
- and
- receiving, at the device, the adjusted RSSI threshold from the location service.
4 more elements
A method comprising:
- receiving, at a location service in a network, an indication sent by a device via radio frequency (RF) of the device having sent a burst of ultrasound or infrared beacons to the network for use by the location service to determine a physical location of the device;
- determining, by the location service, whether the indicated burst of beacons was received by the network;
- adjusting, by the location service, a received signal strength indication (RSSI) threshold used by the device to trigger the sending of the burst of ultrasound or infrared beacons to the network, based in part on the service determining that the indicated burst of beacons was not received by the network;
- and
- sending, by the location service, a notification of the adjusted RSSI threshold to the device.
2 more elements
An apparatus, comprising:
- one or more network interfaces to communicate with a network;
- a processor coupled to the network interfaces and configured to execute one or more processes;
- and
- a memory configured to store a process executable by the processor, the process when executed configured to:
- receive radio frequency (RF) beacon;
- determine received signal strength indication (RSSI) of the received RF beacon;
- compare the determined RSSI to an RSSI threshold;
- send a burst of ultrasound or infrared beacons when the determined RSSI of the RF beacon exceeds the RSSI threshold, wherein the burst of ultrasound or infrared beacons is used by a location service in the network to determine a physical location of the device;
- send an RF notification to the network indicative of the burst of ultrasound or infrared beacons, wherein the location service determines an adjusted RSSI threshold for the device based in part on whether the indicated burst of beacons were actually received by the network;
- and
- receive the adjusted RSSI threshold from the location service.
8 more elements
Dependencies are inferred from the claim text.