1. 3GPP TS 23.003. 2013. Numbering addressing and identification Release 17. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx'specificationId=729. (Accessed on 07/14/2021). 3GPP TS 23.003. 2013. Numbering addressing and identification Release 17. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx'specificationId=729. (Accessed on 07/14/2021).
2. 3GPP TS 23.402. 2019. Architecture enhancements for non-3GPP accesses Release 16. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx'specificationId=850. (Accessed on 07/21/2021). 3GPP TS 23.402. 2019. Architecture enhancements for non-3GPP accesses Release 16. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx'specificationId=850. (Accessed on 07/21/2021).
3. 3GPP TS 24.301. 2019. Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx'specificationId=1072. (Accessed on 03/06/2022). 3GPP TS 24.301. 2019. Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx'specificationId=1072. (Accessed on 03/06/2022).
4. 3GPP TS 33.402. 2020. Security aspects of non-3GPP accesses Release 16. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx'specificationId=2297. (Accessed on 07/17/2021). 3GPP TS 33.402. 2020. Security aspects of non-3GPP accesses Release 16. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx'specificationId=2297. (Accessed on 07/17/2021).
5. 3 GPP TS 36.523--1. 2021. Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC) ; User Equipment (UE) conformance specification; Part 1: Protocol conformance specification Release 16. https://www.etsi.org/deliver/etsi_ts/136500_136599/13652301/16.08.00_60/ts_13652301v160800p.pdf. (Accessed on 07/20/2021). 3GPP TS 36.523--1. 2021. Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC); User Equipment (UE) conformance specification; Part 1: Protocol conformance specification Release 16. https://www.etsi.org/deliver/etsi_ts/136500_136599/13652301/16.08.00_60/ts_13652301v160800p.pdf. (Accessed on 07/20/2021).