US 12,439,351 B2
Communication systems and methods for synchronizing clock timing and frequency
Nimesh Ambeskar, Germantown, MD (US); Jack Lundstedt, Monrovia, MD (US); Yogesh Sethi, Boyds, MD (US); Patrick O'Neil, Germantown, MD (US); and Tyler Horwat, Germantown, MD (US)
Assigned to Hughes Network Systems, LLC, Germantown, MD (US)
Filed by Hughes Network Systems, LLC, Germantown, MD (US)
Filed on May 11, 2022, as Appl. No. 17/742,071.
Prior Publication US 2023/0370984 A1, Nov. 16, 2023
Int. Cl. H04W 56/00 (2009.01); G04R 20/04 (2013.01)
CPC H04W 56/0015 (2013.01) [G04R 20/04 (2013.01); H04W 56/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A communication system comprising:
a grandmaster clock configured to output a primary clock reference based on a received signal; and
a modem unit configured for communication with a remote terminal, the modem unit including
a network clock configured to have a time of day be tuned based on a timestamp generated by the network clock which is related to the primary clock reference, the network clock further configured to output a first signal to be used for a time reference for communications with the remote terminal, and
a master clock configured to be tuned based on the primary clock reference, the master clock further configured to output a second signal to be used for a frequency reference for communications with the remote terminal.