US 12,231,470 B2
Network discovery in a lawful intercept system
Amir Saghir, Frisco, TX (US); Jerry Steben, Fort Worth, TX (US); Jayshree A. Bharatia, Plano, TX (US); William W. Wong, Madison, NJ (US); Maqbool Chauhan, Keller, TX (US); and Raymond WaiMan So, San Ramon, CA (US)
Assigned to Verizon Patent and Licensing Inc., Basking Ridge, NJ (US)
Filed by VERIZON PATENT AND LICENSING INC., Basking Ridge, NJ (US)
Filed on Feb. 18, 2022, as Appl. No. 17/675,269.
Prior Publication US 2023/0269278 A1, Aug. 24, 2023
Int. Cl. H04L 9/40 (2022.01); H04L 67/141 (2022.01); H04L 67/146 (2022.01)
CPC H04L 63/306 (2013.01) [H04L 63/20 (2013.01); H04L 67/141 (2013.01); H04L 67/146 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
maintaining a list of point of interception aggregation (PAG) functions in a network function repository function (NRF) of a cellular network upon instantiation of the PAG functions;
receiving a lawful intercept request for a target user equipment (UE);
identifying a user plane function (UPF) handling data traffic for the target UE;
querying the NRF to determine a respective PAG function based on one or more properties of the UPF and the lawful intercept request; and
associating a point of interception (POI) function with the respective PAG function.