TS 23'402: NonRoaming Reference Architecture for non3GPP Accesses

1
TS 23.402) Non-Roaming Reference Architecture
for non-3GPP Accesses
HSS
Wx
) Colouring of non-3GPP accesses and red arrows
(incl. text in red) added for this presentation
S6a
S4
2G/3G SGSN
PCRF
S3
Rx
S7
MME
S11
Operators IP Services (e.g. IMS, PSS, MIHF
etc.)
SGi
S1-MME
Serving SAE Gateway
PDN SAE Gateway
S10
EUTRAN
S5
S1-U
S6c
S2b
Wm
3GPP AAA Server
ePDG
S2a
S2c
Wn
HPLMN
Non-3GPP Networks
Trusted Non-3GPP IP Access
Untrusted Non-3GPP IP Access
Trusted/Untrusted Non-3GPP IP Access or 3GPP
Access
Wa
Ta
UE
Untrusted non-3GPP access requires ePDG in the
data path
Handovers (Discovery and Selection of non-3GPP
Access is needed before)
2
An example of a possible extension to HO Message
Flow using 802.21 concepts
Untrusted non-3GPP IP Access