Patent ID: 11882503
Assignee: nan
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A two-tier location tracking system comprising:
a user terminal;
a network;
a plurality of long-range wide area network (LoRaWAN) hotspots;
a tracking device;
a plurality of finder units;
the tracking device comprising a tracking device processor, a tracking device memory, a tracking device ROM, a motion sensor, a power supply, and a tracking device LoRaWAN communication module;
each of the plurality of LoRaWAN hotspots comprising a hotspot processor, a hotspot memory, a hotspot ROM, a hotspot LoRaWAN communication module, and a hotspot network port;
the user terminal connecting remotely to the network;
the network connecting remotely to the plurality of LoRaWAN hotspots; and
the tracking device connecting remotely to the plurality of LoRaWAN hotspots and the plurality of finder units;
tier one of the two-tier location tracking system comprising the tracking device connecting remotely to the plurality of LoRaWAN hotspots at fixed locations to determine the first tier (coarse) location of the tracking device;
tier two of the two-tier location tracking system comprising the tracking device connecting remotely to the plurality of finder units deployed by users with known locations of which, to determine the second tier (refined) location of the tracking device.