US 12,255,930 B2
Method, node and computer program of lawful interception systems and networks
Alfredo Somma, Nocera Inferiore (IT); Michele La Torre, Roccapiemonte (IT); Alfonso Buonocore, Pagani (IT); Antonio Villa, Latina (IT); Daniele Gaito, Naples (IT); Lucia Savarese, Salerno (IT); and Vincenzo Starace, Vico Equense (IT)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/622,502
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jun. 27, 2019, PCT No. PCT/SE2019/050633
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2020/263141, PCT Pub. Date Dec. 30, 2020.
Prior Publication US 2022/0263873 A1, Aug. 18, 2022
Int. Cl. H04L 9/40 (2022.01)
CPC H04L 63/306 (2013.01) 23 Claims
OG exemplary drawing
 
1. A method performed in a node for connecting at least two Lawful Interception (LI) sites to the same Physical Networks Function (PNF) comprising a Point Of Interception (POI) or Virtual Networks Function (VNF) comprising a virtualised Point Of Interception (vPOI) controlled by a Triggering Control Function (TCF) for lawful interception of the data communication sessions of targets defined by warrants comprising information identifying the targets, wherein said node is adapted to configure the POIs/vPOIs/TCFs according to LI sites requests and policy requirements for each LI site, the method comprising:
enabling the POI or vPOI/TCF to serve more than one LI site at the same time, wherein the enabling comprises:
handling warrants received from LI sites for distribution to POIs/vPOIs/TCFs; and
distributing received Intercept Related Information (IRD) and/or Communications Content (CC) from the POIs/vPOIs to one or more LI site using a database storing information regarding targets, wherein
the information regarding targets comprises information regarding a first target, and
the information regarding the first target comprises a first target identifier identifying the first target and an LI site identifier identifying an LI site from which a warrant identifying the first target was received, and
the method further comprises:
receiving from a first LI site a first warrant that identifies the first target; and
after receiving the first warrant, determining that the database does not contain information linking the first target with the first LI site, and
the storing of information regarding targets comprises adding to the database information linking the first target identifier with a first LI site identifier identifying the first LI site as a result of determining that the database does not contain information linking the first target with the first LI site.