US 12,462,580 B2
Method and system for a tiered time synchronization protocol for a set of vehicles
Meghna Menon, Ann Arbor, MI (US); Krishna Bandi, Farmington Hills, MI (US); Gregory P. Linkowski, Dearborn, MI (US); and Mario Anthony Santillo, Canton, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Mar. 3, 2023, as Appl. No. 18/177,980.
Prior Publication US 2024/0296683 A1, Sep. 5, 2024
Int. Cl. G06V 20/58 (2022.01); G01S 19/25 (2010.01)
CPC G06V 20/58 (2022.01) [G01S 19/256 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
determining, by a vehicle communication system, whether a primary synchronization data is received from a global synchronization system, wherein the vehicle communication system is disposed at a vehicle from among a set of vehicles;
determining, by the vehicle communication system, whether an auxiliary synchronization data is received from a vehicle coordination system in response to the primary synchronization data not being received, wherein the vehicle coordination system is configured to monitor travel characteristics of each vehicle of the set of vehicles;
estimating, by the vehicle communication system, a vehicle-localized time based on a previous vehicle system time and at least one internal factor in response to the primary synchronization data not being received and in response to the auxiliary synchronization data not being received, wherein the previous vehicle system time is based on at least one of a previous primary synchronization data or a previous auxiliary synchronization data; and
synchronizing, by the vehicle communication system, a vehicle system time employed by one or more vehicle modules disposed in the vehicle based on the estimated vehicle-localized time.