US 9,813,319 B1
Method of detecting packet loss in a communication network
Seng Gan, Ashburn, VA (US)
Assigned to Sprint Spectrum L.P., Overland Park, KS (US)
Filed by Sprint Spectrum LP, Overland Park, KS (US)
Filed on Nov. 22, 2013, as Appl. No. 14/88,160.
Int. Cl. H04L 12/26 (2006.01)
CPC H04L 43/0829 (2013.01) 14 Claims
OG exemplary drawing
 
1. A method of detecting packet loss in a communication network, comprising:
determining at a first network element that a first group of packets meets an observation threshold, wherein the observation threshold comprises a predetermined number of packets in a sequence, and wherein the predetermined number is based on a size of the sequence;
initiating a first timer when the first group of packets meets the observation threshold;
detecting a first packet at the first network element after the first timer is initiated and before the first timer expires;
upon determining that the first packet is greater in the sequence than a first last-detected packet but not a sequential packet, determining a first packet loss and re-initiating the first timer;
determining at a second network element that a second group of packets meets the observation threshold;
initiating a second timer when the second group of packets meets the observation threshold;
detecting a second packet at the second network element after the second timer is initiated and before the second timer expires;
upon determining that the second packet is greater in the sequence than a second last-detected packet but not a sequential packet, determining a second packet loss and re-initiating the second timer; and
comparing the first packet loss determination with the second packet loss determination to determine whether the first packet and second packet are the same packet in the sequence.