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    ETSI TS 126 233-2017 Universal Mobile Telecommunications System (UMTS) LTE Transparent end-to-end Packet-switched Streaming service (PSS) General description (V14 0 0 3GPP TS 26 23.pdf

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    ETSI TS 126 233-2017 Universal Mobile Telecommunications System (UMTS) LTE Transparent end-to-end Packet-switched Streaming service (PSS) General description (V14 0 0 3GPP TS 26 23.pdf

    1、 ETSI TS 126 233 V14.0.0 (2017-04) Universal Mobile Telecommunications System (UMTS); LTE; Transparent end-to-end Packet-switched Streaming service (PSS); General description (3GPP TS 26.233 version 14.0.0 Release 14) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSR3GPP TS 26.233 ver

    2、sion 14.0.0 Release 14 ETSI TS 126 233 V14.0.0 (2017-04)1Reference RTS/TSGS-0426233ve00 Keywords GSM,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre l

    3、a Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document s

    4、hall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETS

    5、I Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present doc

    6、ument, please send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by w

    7、ritten permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLUGTESTSTM,

    8、UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. 3GPP

    9、TS 26.233 version 14.0.0 Release 14 ETSI TS 126 233 V14.0.0 (2017-04)2Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and no

    10、n-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pu

    11、rsuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present d

    12、ocument. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being referenc

    13、es to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“,

    14、“can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. 3GPP TS 26.233 version 14.0.0 Release 14 ETSI TS 126 233 V14

    15、.0.0 (2017-04)3Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Abbreviations . 6g34 Usage scenarios 6g34.1 Applications . 6g34.2 Use case descriptions 6g34.2.1 Simple streaming (Release 4) . 6g34.2.2 Enhance

    16、d streaming service (Release 5) . 8g34.2.3 Streaming and download framework for commercial content (Release 6) . 8g34.2.4 PSS with fast content switching (Release 7) . 9g34.2.5 IMS based PSS, PSS time-shifting and EPC (Release 8) . 9g34.2.6 Adaptive HTTP Streaming, Timed graphics (Release 9) 10g34.2

    17、.7 Dynamic and Adaptive Streaming over HTTP (Releases 10 onwards) 11g35 General service architecture . 11g36 Functional components of a PSS terminal 14g36.1 Session protocols and data transport 14g36.2 Codecs 14g36.3 Adaptation of continuous media (Releases 6, 9 and 10) . 14g37 File format 15g38 Int

    18、erworking with other core network services 15g38.1 Interworking with WAP . 15g38.2 Interworking with MMS . 15g38.3 Interworking with charging/billing services . 16g39 Security. 16g310 Digital Rights Management (Release 6). 16g3Annex A (informative): Change history . 18g3History 19g33GPP TS 26.233 ve

    19、rsion 14.0.0 Release 14 ETSI TS 126 233 V14.0.0 (2017-04)4Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should t

    20、he TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater ind

    21、icates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the specification. The 3GPP packet-switche

    22、d streaming service (PSS) specification consists of seven 3GPP TSs; 3GPP TS 22.233 “Transparent end-to-end packet switched streaming service; Stage 1 6, 3GPP TS 26.234 1, 3GPP TS 26.244 7, 3GPP TS 26.245 8, 3GPP TS 26.246 9, 3GPP TS 26.247 15 and the present document. The service requirements for PS

    23、S are listed in 6. The present document provides an overview of the 3GPP PSS and 1 specifies the set of PSS protocols and codecs used by the service; 7 defines the 3GPP file format, 8 defines the 3GPP Timed Text, and 9 defines the 3GPP SMIL Language Profile, 15 defines the protocols and codecs for 3

    24、GP-DASH which are all used by the 3GPP PSS. Introduction 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

    25、 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 i

    26、s 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. download

    27、ing, 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 de

    28、scribes the transparent 3G packet-switched streaming services (3G PSS) on a general application level. 3GPP TS 26.233 version 14.0.0 Release 14 ETSI TS 126 233 V14.0.0 (2017-04)51 Scope The present document contains a general description of a transparent packet-switched streaming service in 3GPP-def

    29、ined 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 References The following documents contain provisions which, through refere

    30、nce 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 app

    31、lies. 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 refere

    32、nces 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 41.0012. 1 3GPP TS 26.234:“Transparent end-to-end packet switched streaming service (PSS); Protocols and

    33、 codecs“. 2 3GPP TR 41.001: “GSM Specification set“. 3 3GPP TS 22.140: “Service aspects; Stage 1; Multimedia Messaging Service“. 4 3GPP TS 23.140: “Multimedia Messaging Service (MMS), Functional description stage 2/3“. 5 3GPP TS 23.060: “General Packet Radio Service (GPRS); Service description; Stag

    34、e 2“. 6 3GPP TS 22.233: “Transparent end-to-end packet switched streaming service; Stage 1”. 7 3GPP TS 26.244: “Transparent end-to-end packet switched streaming service (PSS); 3GPP file format (3GP)“. 8 3GPP TS 26.245: “Transparent end-to-end packet switched streaming service (PSS); Timed text forma

    35、t“. 9 3GPP 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 3GPP TS 26.237: “IP Multimedia Subsystem (IMS) based Packet Switch Streaming (PSS) and Multimedia Broadcast/Multicast Service

    36、 (MBMS) User Service; Protocols“. 12 3GPP TS 26.142: “Dynamic and Interactive Multimedia Scenes (DIMS)“. 13 3GPP TS 26.430: “Timed Graphics“. 14 3GPP TS 23.401: “General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access“. 15 3GPP TS 26.2

    37、47: “Transparent end-to-end Packet-switched Streaming Service (PSS); Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH)“. 16 3GPP TS 21.905: “Vocabulary for 3GPP Specifications“. 3GPP TS 26.233 version 14.0.0 Release 14 ETSI TS 126 233 V14.0.0 (2017-04)63 Abbreviations For the

    38、purposes of the present document, the abbreviations given in 3GPP TR 21.905 16 and the following apply: 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 Descr

    39、iption P-GW Packet Gateway PCRF Policy and Charging Rules Function PKI Public Key Infrastructure PSS Packet-switched Streaming Service RTSP Real-Time Streaming Protocol SMIL Synchronised Multimedia Integration Language XHTML eXtensible Hyper Text Markup Language 4 Usage scenarios 4.1 Applications Th

    40、e streaming platform supports a multitude of different applications including streaming of news at very low bitrates using still images and speech, music listening at various bitrates and qualities, video clips and watching live sports events. In addition to streaming, the platform supports also pro

    41、gressive downloading of media for selective media types. Media used by the applications can also be protected with a standardised digital rights management (DRM) technology. In the following use case descriptions, a per release structure is used to highlight new features and improvements added in ea

    42、ch release. Unless stated otherwise, features of a particular release are present in subsequent releases and are also backwards compatible to previous releases. 4.2 Use case descriptions 4.2.1 Simple streaming (Release 4) The simple streaming service includes a basic set of streaming control protoco

    43、ls, transport protocols, media codecs and scene description protocol. In this basic case defined for the first time in the Release 4 version of this specification, there is neither explicit capability exchange, nor any encryption or digital rights management. A mobile user gets a URI to specific con

    44、tent that suits his or her terminal. This URI may come from a WWW-browser, a WAP-browser, or typed in by hand. This URI specifies a streaming server and the address of the content on that server. A PSS application that establishes the multimedia session shall understand a Session Description Protoco

    45、l (SDP) file. Sessions containing only non-streamable content such as a SMIL file, still images and text to form a time-synchronised presentation dont require use of an SDP file in session establishment. Instead HTTP protocol shall be used for receiving the presentation files. PSS SMIL 9 sessions ca

    46、n also include URIs to streamable content, requiring parsing a SDP file and/or RTSP signalling. The SDP file may be obtained in a number of ways. It may be provided in a link inside the HTML page that the user downloads, via an embed tag. It may also be directly obtained by typing it as a URI. It ma

    47、y also be obtained through RTSP signalling via the DESCRIBE method. In case of streaming delivery option of MMS service, the SDP file is obtained via the MMS user agent that receives a modified MMS message from the MMS relay or server. The SDP file contains the description of the session (session na

    48、me, author,), the type of media to be presented, and the bitrate of the media. The session establishment is the process in which the browser or the mobile user invokes a streaming client to set up the session against the server. The UE is expected to have an active PDP context in accordance with 5 o

    49、r other type of radio bearer that enables IP packet transmission at the start of session establishment signalling. The client may be able 3GPP TS 26.233 version 14.0.0 Release 14 ETSI TS 126 233 V14.0.0 (2017-04)7to ask for more information about the content. The client shall initiate the provisioning of a bearer with appropriate QoS for the streaming media. The set up of the streaming service is done by sending an RTSP SETUP message for each media stream chosen by the client. This returns the UDP and/or


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