US 11,860,261 B2
Master-less device coordination in location positioning system
Endre Bakka, Oslo (NO); and Wilfred Edwin Booij, Oslo (NO)
Assigned to Sonitor Technologies AS, Oslo (NO)
Filed by Sonitor Technologies AS, Oslo (NO)
Filed on Sep. 6, 2022, as Appl. No. 17/903,094.
Application 17/903,094 is a continuation of application No. 16/892,049, filed on Jun. 3, 2020, granted, now 11,435,463.
Prior Publication US 2023/0145785 A1, May 11, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 11/16 (2006.01); G01S 11/08 (2006.01); H04W 56/00 (2009.01)
CPC G01S 11/16 (2013.01) [G01S 11/08 (2013.01); H04W 56/002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A communication device of a plurality of communication devices, the communication device comprising:
a clock;
a first transceiver coupled with an antenna;
a second transceiver coupled with a transducer;
a memory; and
at least one processor configured to execute instructions stored in the memory that cause the at least one processor to perform operations comprising:
receiving at least one message from a second communication device of the plurality of communication devices over a preconfigured time duration;
determining a first local time of the clock of the communication device at which the at least one message from the second communication device is received;
determining a sync-time of the second communication device based on the at least one message from the second communication device;
mapping the sync-time of the second communication device to a second local time of the clock of the communication device based on the first local time, and the determined sync-time of the second communication device; and
adjusting a sync-time of the communication device based on the second local time,
wherein the sync-time of the communication device corresponds with a first configurable offset from a reference time, within which a first data is transmitted from the communication device to the plurality of communication devices, and
wherein the sync-time of the second communication device corresponds with a second configurable offset from the reference time, within which a second data is transmitted from the second communication device to the plurality of communication devices.