US 12,225,622 B2
Methods and network nodes for tracing user equipment
Hongxia Long, Shanghai (CN)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/601,164
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 9, 2019, PCT No. PCT/CN2019/104959
§ 371(c)(1), (2) Date Oct. 4, 2021,
PCT Pub. No. WO2020/215586, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. PCT/CN2019/084401 (WO), filed on Apr. 25, 2019.
Prior Publication US 2022/0182809 A1, Jun. 9, 2022
Int. Cl. H04W 8/06 (2009.01); H04W 8/26 (2009.01)
CPC H04W 8/06 (2013.01) [H04W 8/26 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method performed by an Authentication Server Function, (AUSF) node for tracing a User Equipment (UE) comprising:
receiving a tracing activation instruction to activate tracing of the UE based on a permanent equipment identifier of the UE;
obtaining trace requirement data associated with the UE;
receiving from an Access and Mobility Management Function (AMF) node a first signaling message containing the permanent equipment identifier of the UE; and
generating a trace record related to the UE based on the trace requirement data in response to receiving the first signaling message.