US Patent No. 9,271,247

CHARACTERIZING SLAVE CLOCK SYNCHRONIZATION BEHAVIOR BY MEANS OF DROPPED SYNC PACKETS


Patent No. 9,271,247
Issue Date February 23, 2016
Title Characterizing Slave Clock Synchronization Behavior By Means Of Dropped Sync Packets
Inventorship Timothy Hugh Pearson, Overland Park, KS (US)
Steven Kenneth Guthrie, Kanasas City, KS (US)
Seng Gan, Ashburn, VA (US)
Adeel Ahmed Siddiqui, Leesburg, VA (US)
Assignee Sprint Communications Company L.P., Overland Park, KS (US)

Claim of US Patent No. 9,271,247

1. A method of characterizing a synchronization behavior of a slave device by dropping sync packets, the method comprising:
transmitting a sequence of sync packets from a grandmaster device to a slave device, wherein the sync packets are received
at an intermediate device and forwarded to the slave device;

monitoring a synchronization output of the slave device that is usable to determine whether the slave device is synchronized
with the grandmaster device;

at the intermediate device, dropping one or more of the sync packets, wherein dropping one or more of the sync packets includes
dropping one or more of the sync packets in a variety of repetitive patterns such that each of the repetitive patterns is
transmitted for a respective period of time;

while dropping one or more of the sync packets, determining whether the slave device is synchronized with the grandmaster
device; and

storing an indication that characterizes the synchronization behavior of the slave device with respect to each variety of
the repetitive patterns.