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Content for  TR 26.891  Word version:  16.0.0

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0  IntroductionWord‑p. 5

With the introduction of the 5G System, the network core architecture underwent a complete overhaul. The 5G Core has been designed following a Function-based approach with separation of control and user plane. Concepts like network slicing, edge computing, dynamic QoS, northbound APIs, and traffic influencing are a core part of the 5G System.
This Technical Report documents the integration of media distribution services in the 5G System. It is organized in two parts: network aspects and UE API aspects. The network aspects cover the migration of existing media distribution services from LTE to 5G. It also discusses emerging media services and use cases and how they can be realized in 5G. The API section investigates requirements of existing and immersive media services and the related requirements and API needs.
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1  ScopeWord‑p. 6

The present document studies the evolution of media distribution with the development of 5G. It addresses the networking and the API aspects that effect the integration in the 5G System.

2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.501: "System Architecture for the 5G System".
[3]
TS 23.502: "Procedures for the 5G System".
[4]
ETSI TS 102 796: "Hybrid Broadcast Broadband TV".
[5]
TS 26.346: "Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs".
[6]
TS 26.234: "Transparent end-to-end Packet-switched Streaming Service (PSS); Protocols and codecs".
[7]
RFC 4337:  "MIME Type Registration for MPEG-4".
[8]
RFC 6381:  "The 'Codecs' and 'Profiles' Parameters for "Bucket" Media Types".
[9]
ETSI GS MEC 011: "Mobile Edge Computing (MEC); Mobile Edge Platform Application Enablement".
[10]
ETSI GS MEC 009: "Mobile Edge Computing (MEC); General Principles for Mobile Edge Service APIs".
[11]
TR 23.722: "Study on Common API Framework for 3GPP Northbound APIs".
[12]
TS 26.247: "Transparent end-to-end Packet-switched Streaming Service (PSS); Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH)".
[13]
TS 23.222: "Functional architecture and information flows to support Common API Framework for 3GPP Northbound APIs; Stage 2".
[14]
TR 26.918: "Virtual Reality (VR) media services over 3GPP".
[15]
TR 22.891: "Study on New Services and Markets Technology Enablers".
[16]
TR 28.803: "Study on management aspects of edge computing (Release 16)".
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3  Definitions and abbreviationsWord‑p. 7

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.

3.2  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
DASH
Dynamic Adaptive Streaming over HTTP
HbbTV
Hybrid Broadcast Broadband TeleVision
HEVC
High Efficiency Video Coding
HTML-5
HyperText Markup Language version 5
HW
HardWare
ISO BMFF
ISO Base Media File Format
MIME
Multipurpose Internet Mail Extensions
OMAF
Omnidirectional MediA Formal
UL
Up-Link
VR
Virtual Reality
ABR
Adaptive Bitrate
AMF
Access and Mobility Management Function
ANIF
Application to Network Interactions Function
API
Application Programming Interface
ARP
Allocation and Retention Priority
AUSF
Authentication Server Function
CAPIF
Common API Framework
CDN
Content Distribution Network
CDR
Call Detail Record
CENC
Common Encryption
CMAF
Common Media Application Format
DANE
DASH-Aware Network Element
DNAI
Data Network Access Identifier
DNN
Data Network Name
DNS
Domain Name Service
DRM
Digital Rights Management
DVR
Digital Video Recording
EMD
Edge Media Delivery
ESAM
Event Signaling and Messaging
FEC
Forward Error Correction
FLUS
Framework for Live Uplink Streaming
FQDN
Fully Qualified Domain Name
GBR
Guaranteed Bitrate
GPU
Graphics Processing Unit
JITP
Just In-time Packaging
LADN
Local Aread Data Network
MBR
Maximum Bitrate
MEC
Mobile Edge Computing
MNO
Mobile Network Operator
NAS
Non-access Stratum
NEF
Network Exposure Function
NRF
Network Repository Function
NSSAI
Network Slice Selection Assistance Information
NSSF
Network Slice Selection Function
PCF
Policy Control Function
POIS
Placement Opportunity Information Service
QFI
QOS Flow Identity
RAT
Radio Access Technology
SDI
Serial Digital Interface
SLA
Service Level Agreement
SMF
Session Management Function
SSC
Session and Service Continuity
UDR
Unified Data Repository
UDSF
Unstructured Data Storage Function
UPF
User Plane Function
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