US 12,095,890 B2
Monitoring of communication
Tero Jalkanen, Tuusula (FI); and Tomi Sarajisto, Helsinki (FI)
Assigned to TELIA COMPANY AB, Solna (SE)
Filed by Telia Company AB, Solna (SE)
Filed on Feb. 8, 2022, as Appl. No. 17/667,039.
Claims priority of application No. 20215131 (FI), filed on Feb. 9, 2021.
Prior Publication US 2022/0256016 A1, Aug. 11, 2022
Int. Cl. H04L 69/22 (2022.01); H04L 5/00 (2006.01); H04L 43/0888 (2022.01); H04L 43/0894 (2022.01); H04L 43/18 (2022.01)
CPC H04L 69/22 (2013.01) [H04L 5/0048 (2013.01); H04L 43/0888 (2013.01); H04L 43/0894 (2013.01); H04L 43/18 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for monitoring a communication on a core network between a first communicating entity and a second communicating entity configured to communicate on the core network, the method, performed by a network node residing on the core network, comprising:
during an attachment procedure,
receiving metadata over a signaling plane from at least one of: the first communicating entity and the second communicating entity, and
storing the metadata with an identifier identifying a communication session from which the metadata is stored from in a data storage;
receiving measurement data indicative of a payload data between the first communicating entity and the second communicating entity;
receiving the metadata from the data storage configured to store the metadata received prior to the payload data traffic, the metadata being indicative of the payload data carried in a payload data traffic between the first communicating entity and the second communicating entity, the metadata being inquired from the data storage with the identifier obtained from the measurement data indicative of the payload data, the identifier being indicative of the communication session;
comparing at least one parameter derivable from the measurement data to respective at least one parameter derivable in the metadata; and
setting, in accordance with a comparison between the at least one parameter of the measurement data and the respective at least one parameter of the metadata, a detection result to express one of the following:
(i) the payload data between the first communicating entity and the second communicating entity complies with the metadata, and
(ii) the payload data between the first communicating entity and the second communicating entity deviates from the metadata.