Evolved Packet System (EPS); 3GPP EPS AAA interfaces
The present document defines the stage-3 protocol description for several reference points for the non-3GPP access in EPS:
- The SWa reference point between an un-trusted non-3GPP IP access and the 3GPP AAA Server/Proxy.
- The STa reference point between a trusted non-3GPP IP access and the 3GPP AAA Server/Proxy.
- The SWd reference point between the 3GPP AAA Proxy and 3GPP AAA Server.
- The SWx reference point between the 3GPP AAA Server and the HSS.
- The S6b reference point between the 3GPP AAA Server/Proxy and the PDN GW.
- The SWm reference point between the 3GPP AAA Server/Proxy and the ePDG.
- The reference point between the 3GPP AAA Server/Proxy and the EIR.
The present document also defines the stage 3 protocol description for the following reference points defined for Non-seamless WLAN offload in 5GS:
- the SWa' reference point between a non-3GPP WLAN access, possibly via a 3GPP AAA Proxy, and the NSWO NF; and
- the SWd' reference point between the 3GPP AAA Proxy, possibly via an intermediate 3GPP AAA Proxy, and the NSWO NF.