US 10,893,494 B2
System and method for synchronizing protocol analyzers during wireless testing
Leigh Chinitz, Wellesley, MA (US); and Donald Simpson, Mountain View, CA (US)
Assigned to OCTOSCOPE INC., Littleton, MA (US)
Filed by Octoscope Inc., Littleton, MA (US)
Filed on Jul. 18, 2019, as Appl. No. 16/515,786.
Claims priority of provisional application 62/825,418, filed on Mar. 28, 2019.
Claims priority of provisional application 62/699,838, filed on Jul. 18, 2018.
Prior Publication US 2020/0028905 A1, Jan. 23, 2020
Int. Cl. H04W 56/00 (2009.01); H04L 12/26 (2006.01); H04L 12/861 (2013.01)
CPC H04W 56/001 (2013.01) [H04L 43/10 (2013.01); H04L 43/18 (2013.01); H04L 43/50 (2013.01); H04L 49/90 (2013.01)] 35 Claims
OG exemplary drawing
 
1. A computer-implemented method for synchronizing wireless testing devices, comprising:
in a first protocol analyzer located in a first RF-isolated test chamber, capturing first network packets transmitted to or from a wireless device-under-test (DUT) to generate first test data;
in a second protocol analyzer located in a second RF-isolated test chamber, capturing second network packets transmitted to or from the wireless DUT to generate second test data;
synchronizing internal clocks of the first and second protocol analyzers such that the first and second protocol analyzers capture the first and second network packets with respect to a synchronized internal clock time;
merging the first and second captures using the synchronized internal clock time; and
in the first protocol analyzer, generating a trigger output signal when any of the first network packets satisfies a trigger rule,
wherein the trigger output signal comprises a start trigger output signal that causes the second protocol analyzer to start storing the second test data.