Page 1353 - 5G Basics - Core Network Aspects

Signalling aspects 3

Table 7-4 – Mapping reference points to interfaces

DSN architecture for content services
Interface description
Interfaces Mapping reference points

Is-a A2 Interface between SCF-PE and AF-PE
Is-e C6, C8 Interface between SCF-PE and end user
Is-n C1 Interface between SCF-PE and NEF-PE
Is-s C2 Interface between SCF-PE and SCF-PE
Ie-a A1 Interface between AF-PE and end user

8 Protocols used for interfaces

8.1 Protocols used for interfaces when deploying content services over DSN

Interfaces which are included in Figure 7-1 of DSN architecture for content services are listed in Table 8-1.

Table 8-1 – Protocols used for interfaces in DSN architecture
when deploying content services

Interfaces Interface description Protocols Relevant specifications
Is-a Interface between SCF-PE and Hypertext Transfer Protocol [IETF RFC 2616]
CSAF-PE (HTTP)
Is-e Interface between SCF-PE and Real time streaming protocol [IETF RFC 2326]
end user (RTSP)
Is-n Interface between SCF-PE and REsource LOcation And [IETF RFC 6940]
NEF-PE Discovery (RELOAD)
Is-s Interface between SCF-PE and RELOAD [IETF RFC 6940]
SCF-PE for resource location
Ic-c Interface between CDF-PE and RELOAD [IETF RFC 6940]
CDF-PE

Ie-a Interface between CSAF-PE and HTTP [IETF RFC 2616]
end user
Real-time Transport Protocol
Interface between CDF-PE and [IETF RFC 3550] and
Ie-c (RTP) over user datagram
end user [IETF RFC 768]
protocol (UDP)

8.2 Protocols used for interfaces when deploying MMTel service over DSN
Interfaces which are included in Figure 7-2 of DSN architecture for MMTel service are listed in Table 8-2.

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