Page 516 - 5G Basics - Core Network Aspects

1 Core network aspects

Appendix III

Mapping between this Recommendation and 3GPP functions
(This appendix does not form an integral part of this Recommendation)

III.1 Introduction
This appendix demonstrates the consistency of the architecture presented in the body of this
Recommendation with the architecture being specified for the 3GPP evolved packet system (EPS).

III.2 References
The 3GPP entities and the functions they perform are taken from [b-3GPP 23.401], [b-3GPP 23.402] and [b-
3GPP 36.300].

III.3 Architectural scenarios

This clause presents representative architectural arrangements to aid in the understanding of the mapping
presented in clause III.4.

III.3.1 Non-roaming architecture for 3GPP accesses within EPS using PMIP-based S5

The relevant 3GPP architectural reference diagram for this scenario is shown in Figure III.1. It is assumed in
the mapping that follows that the dashed oval encloses the access network as understood within the ITU-T
NGN architecture.

Access network Core network

HSS

S6a
S10
PCRF
Rx+
MME
S7c
S1-MME S7
S3 S11 Operator's
SGi IP services
S1-U Serving S5-PMIP PDN (IMS, etc.)
E-UTRAN gateway gateway

S4
2G/3G
SGSN Y.2018(09)_FIII.1

Figure III.1 – Non-roaming architecture for 3GPP accesses
within EPS using PMIP-based S5
III.3.2 Roaming architecture for 3GPP accesses within EPS using PMIP-based S8

The relevant 3GPP architectural reference diagram for this scenario is shown in Figure III.2.

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