US 11,736,941 B2
5G NAS deciphering enhance rate of convergence mechanism
Tauras Liubinskas, Lexington, KY (US); Subappriya Muthuchamy, Fremont, CA (US); Sandeep Prasad, Pleasanton, CA (US); Abhishek Saraswati, Santa Clara, CA (US); Alessandro Pinelli, Modena (IT); Pritish Vijay Aherrao, Pune (IN); Loreto Di Resta, Modena (IT); and Brandon Bass, Flower Mound, TX (US)
Assigned to NetScout Systems, Inc., Westford, MA (US)
Filed by NetScout Systems, Inc., Westford, MA (US)
Filed on Aug. 23, 2021, as Appl. No. 17/409,196.
Claims priority of application No. 202141029412 (IN), filed on Jun. 30, 2021.
Prior Publication US 2023/0007476 A1, Jan. 5, 2023
Int. Cl. G06F 7/04 (2006.01); H04W 12/06 (2021.01); H04W 12/69 (2021.01); H04W 12/0431 (2021.01); H04W 12/03 (2021.01)
CPC H04W 12/06 (2013.01) [H04W 12/03 (2021.01); H04W 12/0431 (2021.01); H04W 12/69 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A non-transitory computer readable medium comprising instructions for providing a mobile user monitoring solution that, when executed by a processor, cause the processor to:
capture a second message transmitted over an N1 interface in a 5G network;
determine that a first user identifier (ID) of a first type of user ID in the second message does not correspond to a mapping in a stored table, the stored table comprising mappings between user IDs of the first type and (i) user IDs of a second type, or (ii) cipher keys;
capture a transaction transmitted over an N12 interface in the 5G network;
responsive to the determination, extract, from the transaction, (i) one of an expected response (XRES) or an authentication token (AUTN), (ii) a second user ID, and (iii) a cipher key;
capture a first message transmitted over an N1 interface in the 5G network; and
determine that the first message is associated with the user ID and the cipher key extracted from the transaction.