1. 3GPP TS 23.216 (2020), Single Radio Voice Call Continuity (SRVCC); Stage 2, Release 16.
2. 3GPP TS 28.404 (2020), Quality of Experience (QoE) Measurement Collection; Concepts, Use Cases and Requirements, Release 16.
3. 3GPP TS 32.401 (2018), Performance Management (PM); Concept and Requirements, Release 15.
4. 3GPP TS 32.421 (2015), Subscriber and Equipment Trace; Trace Concepts and Requirements, Release 11.
5. 3GPP TS 32.450 (2019), Key Performance Indicators (KPI) for Evolved Universal Terrestrial Radio Access Network (E-UTRAN): Definitions, Release 15.