US 11,683,237 B2
Method to enhance system analysis
Serverius Petrus Paulus Pronk, Vught (NL); Marc Andre Peters, Veldhoven (NL); Johannes Henricus Maria Korst, Eindhoven (NL); and Mauro Barbieri, Eindhoven (NL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 17/618,579
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Jun. 17, 2020, PCT No. PCT/EP2020/066717
§ 371(c)(1), (2) Date Dec. 13, 2021,
PCT Pub. No. WO2020/254376, PCT Pub. Date Dec. 24, 2020.
Claims priority of provisional application 62/863,888, filed on Jun. 20, 2019.
Prior Publication US 2022/0263723 A1, Aug. 18, 2022
Int. Cl. H04L 41/14 (2022.01); H04L 41/12 (2022.01); H04L 41/22 (2022.01)
CPC H04L 41/14 (2013.01) [H04L 41/12 (2013.01); H04L 41/22 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A network diagnostic system for analyzing a wireless network comprising a plurality of access points, APs, implementing roaming by way of handover of wireless devices between APs, the network diagnostic system comprising:
an electronic processor; and
a non-transitory storage medium storing instructions readable and executable by the electronic processor to perform a network diagnostic method including:
extracting a global handover frequency, HF, graph from counts or frequencies of handover events over an analysis time interval in the wireless network wherein each handover event comprises a source AP from which a wireless device disconnects and a destination AP to which the wireless device connects;
constructing a HF network topology graph for the analysis time interval from the extracted global HF graph wherein the HF network topology graph has nodes representing at least a subset of the APs of the extracted handover events and edges connecting pairs of nodes with each edge having a weight representing a count or frequency of handover events between the APs represented by the pair of nodes connected by the edge; and
performing a network diagnostic or visualization task using the HF network topology graph.