US 11,777,998 B2
Secure lawful interception in network elements
Claudio Carotenuto, Nocera Inferiore (IT); Elio Barese, Naples (IT); Paolo D'Amora, Gragnano (IT); Francesca Marfia, Pagani (IT); and Vincenzo Paparo, Torre Annunziata (IT)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/281,791
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Oct. 4, 2018, PCT No. PCT/SE2018/051015
§ 371(c)(1), (2) Date Mar. 31, 2021,
PCT Pub. No. WO2020/071971, PCT Pub. Date Apr. 9, 2020.
Prior Publication US 2021/0385256 A1, Dec. 9, 2021
Int. Cl. H04L 9/40 (2022.01)
CPC H04L 63/306 (2013.01) 10 Claims
OG exemplary drawing
 
1. A method performed by a network element, NE, in a communication network, the method comprising:
receiving via an X1 interface between a lawful interception, LI, function and the NE, from the LI function, a request for opening an injection channel between the LI function and the NE;
transmitting via the X1 interface to the LI function, a confirmation that the injection channel is open;
receiving a lawful interception software module, LI-SWM, via the injection channel via the X1 interface, the LI-SWM being configured to perform LI of user traffic handled by the NE;
transmitting via the x1 interface, to the LI function, a request to close the injection channel;
storing the LI-SWM in a memory area that is protected from unauthorized access; and
executing the LI-SWM, comprising LI of user traffic handled by the NE.