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Content for  TS 26.233  Word version:  15.0.0

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0  Introductionp. 4

Streaming refers to the ability of an application to play synchronised media streams like audio and video streams in a continuous way while those streams are being transmitted to the client over a data network.
Applications, which can be built on top of streaming services, can be classified into on-demand and live information delivery applications. Examples of the first category are music and news-on-demand applications. Live delivery of radio and television programs are examples of the second category.
Streaming over fixed-IP networks is already a major application today. While IETF and W3C have developed a set of protocols used in fixed-IP streaming services, no complete standardised streaming framework has yet been defined. For 3G systems, the 3G packet-switched streaming service (PSS) fills the gap between 3G MMS, e.g. downloading, and conversational services.
PSS enables mobile streaming applications, where the protocol and terminal complexity is lower than for conversational services, which in contrast to a streaming terminal require media input devices, media encoders and more complex protocols.
The present document describes the transparent 3G packet-switched streaming services (3G PSS) on a general application level.
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1  Scopep. 5

The present document contains a general description of a transparent packet-switched streaming service in 3GPP-defined networks. In particular, it defines the usage scenarios, overall high-level end-to-end service concept, and lists terminal related functional components. It also lists any identified service interworking requirements.

2  Referencesp. 5

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.
    The present document may contain references to pre-Release-4 GSM specifications. These references shall be taken to refer to the Release 5 or 6 versions where that version exists. Conversion from the pre-Release 4 number to the Release 4 (onwards) number is given in clause 6.1 of 3GPP TR 41.001 [2].
[1]
TS 26.234: "Transparent end-to-end packet switched streaming service (PSS); Protocols and codecs".
[2]
3GPP TR 41.001: "GSM Specification set".
[3]
TS 22.140: "Service aspects; Stage 1; Multimedia Messaging Service".
[4]
TS 23.140: "Multimedia Messaging Service (MMS), Functional description stage 2/3".
[5]
TS 23.060: "General Packet Radio Service (GPRS); Service description; Stage 2".
[6]
TS 22.233: "Transparent end-to-end packet switched streaming service; Stage 1".
[7]
TS 26.244: "Transparent end-to-end packet switched streaming service (PSS); 3GPP file format (3GP)".
[8]
TS 26.245: "Transparent end-to-end packet switched streaming service (PSS); Timed text format".
[9]
TS 26.246: "Transparent end-to-end packet switched streaming service (PSS); 3GPP SMIL Language Profile".
[10]
Open Mobile Alliance: "OMA DRM Specification, V2.0".
[11]
TS 26.237: "IP Multimedia Subsystem (IMS) based Packet Switch Streaming (PSS) and Multimedia Broadcast/Multicast Service (MBMS) User Service; Protocols".
[12]
TS 26.142: "Dynamic and Interactive Multimedia Scenes (DIMS)".
[13]
TS 26.430: "Timed Graphics".
[14]
TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
[15]
TS 26.247: "Transparent end-to-end Packet-switched Streaming Service (PSS); Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH)".
[16]
TS 21.905: "Vocabulary for 3GPP Specifications".
[17]
ISO/IEC 23009-5:2016: "Information Technology - Dynamic adaptive streaming over HTTP (DASH) - Part 5: Server and network assisted DASH (SAND)".
[18]
TR 26.957: "Study on Server And Network-assisted DASH (SAND) for 3GPP Multimedia Services".
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3  Abbreviationsp. 6

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply:
DANE
DASH-Aware Network Element
DASH
Dynamic Adaptive Streaming over HTTP
DRM
Digital Rights Management
GIF
Graphics Interchange Format
HTML
HyperText Markup Language
MMS
Multimedia Messaging Service
MPD
Media Presentation Description
P-GW
Packet Gateway
PCRF
Policy and Charging Rules Function
PER
Parameters Enhancing Reception
PKI
Public Key Infrastructure
PSS
Packet-switched Streaming Service
RTSP
Real-Time Streaming Protocol
SAND
Server and Network Assisted DASH
SMIL
Synchronised Multimedia Integration Language
XHTML
eXtensible Hyper Text Markup Language
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