| CPC H03G 3/32 (2013.01) [H04H 20/59 (2013.01); H04R 5/04 (2013.01); H04W 4/90 (2018.02); H04R 2430/01 (2013.01)] | 8 Claims | 

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               1. A system for synchronizing a local node to a global time, comprising: 
            one or more processors, configured to: 
              receive a first time at which a main node transmits a first synch message including the first time; 
                  determine a second time at which the local node receives the first synch message; 
                  determine a difference between the first time and the second time; 
                  receive a third time at which the main node transmits a second synch message including the third time; 
                  determine a fourth time at which the local node receives the second synch message; and 
                  determine the global time by adding the first difference to the third time. 
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