Patent ID: 11968601
Assignee: ZAINAR, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H  Y | IPC H

Claim 0:
1. A method comprising:
during a first time period:
generating a response schedule for a first asset tag, the response schedule defining:
a sequence of trigger times for transmitting a sequence of unicast triggers; and
a sequence of wake windows, each wake window in the sequence of wake windows intersecting a trigger time in the sequence of trigger times;

at a first node in a set of nodes:
broadcasting a first configuration message to the first asset tag via a configuration channel, the first configuration message comprising the response schedule;

at the first asset tag:
in response to absence of configuration data, transitioning a transceiver of the first asset tag to the configuration channel;
receiving the first configuration message via the configuration channel;
configuring the first asset tag based on the first configuration message; and
in response to a time duration until a first wake window, in the sequence of wake windows, exceeding a threshold time duration, entering a sleep mode; and

during a second time period:
at the first node in the set of nodes,
based on a first trigger time in the sequence of trigger times, broadcasting a first unicast trigger, in the sequence of unicast triggers, via a ranging channel;

at the first asset tag:
based on the first wake window, in the sequence of wake windows, entering a wake mode;
in response to receiving the first unicast trigger via the ranging channel, transmitting a first ranging signal; and
in response to transmitting the first ranging signal, entering the sleep mode; and

at the set of nodes:
receiving the first ranging signal; and

deriving a first location of the first asset tag during the second time period based on instances of the first ranging signal received by the set of nodes.