1、 ETSI TS 122 233 V14.0.0 (2017-05) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Transparent end-to-end packet-switched streaming service; Stage 1 (3GPP TS 22.233 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 12
2、2 233 V14.0.0 (2017-05)13GPP TS 22.233 version 14.0.0 Release 14Reference RTS/TSGS-0122233ve00 Keywords GSM,LTE,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 e
3、nregistre la 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
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6、present document, 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 auth
7、orized by written 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, PL
8、UGTESTSTM, 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. oneM2M logo is protected for the benefit of its Members GSM and the GSM logo
9、 are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 122 233 V14.0.0 (2017-05)23GPP TS 22.233 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to thes
10、e essential IPRs, if any, is publicly available for ETSI members and non-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
11、updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant 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
12、server) which are, or may be, or may become, essential to the present document. 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 iden
13、tities or GSM identities. These should be interpreted as being references 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“, “shal
14、l not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “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
15、 citation. ETSI ETSI TS 122 233 V14.0.0 (2017-05)33GPP TS 22.233 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviatio
16、ns . 6g34 Entities involved in Streaming service . 6g35 Service Requirements . 7g35.1 General . 7g35.2 Media Types . 8g35.3 Multimedia Composition and Interaction . 9g35.4 Transport 9g35.5 Service Personalization 10g35.6 Service Management 10g36 Security. 11g37 Charging . 11g38 Digital Rights Manage
17、ment 11g39 Interworking . 11g310 Service Interaction 11g3Annex A (informative): PSS Examples . 13g3Annex B (informative): Change history . 15g3History 16g3ETSI ETSI TS 122 233 V14.0.0 (2017-05)43GPP TS 22.233 version 14.0.0 Release 14Foreword This Technical Specification has been produced by the 3rd
18、Generation 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 the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release
19、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 indicates TSG approved document under change control. Y the second digit is incremented for all changes of substance, i.e. tech
20、nical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. Introduction 3G mobile systems, through the increase in available bandwidth, offer new possibilities and services. One of these new services will be the
21、 ability to stream sound and movies to mobile devices. Streaming is a mechanism whereby media content can be rendered at the same time that it is being transmitted to the client over the data network. Streaming services are required whenever instant access to multimedia information needs to be integ
22、rated into an interactive media application. This has to be seen in contrast to other multimedia services like for instance MMS where multimedia content is delivered to the user asynchronously by means of a “message”. Interactive applications that use streaming services include on-demand and live in
23、formation delivery applications. Examples of the first category are music, music videos and news-on-demand applications. Live delivery of radio and television programs are examples of the second category, this could e.g. make it possible to listen to domestic radio while abroad. A web server works w
24、ith requests for information, it delivers that particular information as fast as possible, completes the transaction, disconnects and goes on to other requests. A client connects to a web server only when it needs information. This strategy works well as long as pictures and text are to be received.
25、 If a client wants to watch video or listen to audio, the entire file must be received before it can be played. The problem is that these kinds of files can be very large thus potentially causing storage problems in the client and resulting in long start-up latency. A streaming service improves this
26、 by allowing the media to be consumed as it is received, thereby reducing the latency and removing the need to store the media. In addition to providing the streaming mechanism the PSS also encompasses the composition of media objects thereby allowing compelling multimedia services to be provisioned
27、. For instance, a mobile cinema ticketing application would allow the user to view the film trailers. ETSI ETSI TS 122 233 V14.0.0 (2017-05)53GPP TS 22.233 version 14.0.0 Release 141 Scope This Technical Specification defines the stage one description of the Packet-switched Streaming Service (PSS).
28、Stage one is the set of requirements that shall be supported for the provision of a streaming service, seen primarily from the users and service providers points of view but also includes the service capabilities of the PSS itself This TS includes information applicable to network operators, service
29、 providers, terminal and network manufacturers. This TS contains the core requirements for the Packet-switched Streaming Service (PSS), which are sufficient to enable a range of services. 2 References The following documents contain provisions which, through reference in this text, constitute provis
30、ions 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
31、 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 Void 2 Void 3 3GPP TS 22.105: “Services and Service Capabilities”. 4 3GPP TS 26.233: “Transparent End to End Packet Switched S
32、treaming Service (PSS): General Description”. 5 3GPP TS 26.234: “Transparent End to End Packet Switched Streaming Service (PSS): Protocol and Codecs”. 6 3GPP TS 21.905: “Vocabulary for 3GPP specifications”. 7 Void 8 IETF RFC 2046: “Multipurpose Internet Mail Extensions (MIME) part 2: media types”. 9
33、 3GPP TS 22.242: “Digital Rights Management (DRM)”. 3 Definitions and abbreviations 3.1 Definitions Client: in the context of Streaming Service the client is a device (or service) that receives media objects and/or multimedia composition instructions from a server. Media Type: a type of media e.g. t
34、ext, audio, video, graphics (see section 5.2) Media Object: an instance of a media type (e.g. a picture) or a combination of instances of media types (e.g. a video clip that includes audio) Media Attribute: an attribute of a media object depending on the media type e.g. the colour of a piece of text
35、 ETSI ETSI TS 122 233 V14.0.0 (2017-05)63GPP TS 22.233 version 14.0.0 Release 14Multimedia Composition: the position in time and space of media objects relative to one another Multimedia Services: Services that handle several types of media such as audio and video in a synchronised way from the user
36、s point of view. A multimedia service may involve multiple parties, multiple connections, and the addition or deletion of resources and users within a single communication session. Server: in the context of the Streaming Service the server is a device (or service) that delivers media objects and/or
37、multimedia composition instructions in response to client requests. Streaming: a mechanism whereby media content can be rendered at the same time that it is being transmitted to the client over the data network. Streaming Service: an alternative way of referring to the PSS. Terminal Profile: Set of
38、information about the physical capabilities of the terminal. User Profile: Is the set of information necessary to provide a user with a consistent, personalised service environment, irrespective of the users location or the terminal used (within the limitations of the terminal and the serving networ
39、k). 3.2 Abbreviations For the purposes of the present document, the abbreviations given in TR 21.905 6 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 6. CODEC Coder / DECoder MMS Multimedia
40、Messaging Service PS Packet Switched PSS Packet Switched Streaming Service QoS Quality of Service UE User Equipment4 Entities involved in Streaming service The figures 01 and 02 shows the basic entities involved in the Streaming service and how they connect. Clients initiate the service and connect
41、to the selected content server. Content servers can generate live content e.g. video from a concert. User profile and terminal capability data can be stored on a network server and will be contacted at the initial set up. User Profile will provide the Streaming service with the users preferences. Te
42、rminal capabilities will be used by the Streaming service to decide whether or not the client is capable of receiving the streamed content. Portals are servers allowing convenient access to streamed media content. For instance, a portal might offer content browse and search facilities. In the simple
43、st case, it is simply a Web/WAP-page with a list of links to streaming content. The content itself is usually stored on content servers, which can be located elsewhere in the network. ETSI ETSI TS 122 233 V14.0.0 (2017-05)73GPP TS 22.233 version 14.0.0 Release 14Streaming Client Content Servers User
44、 and terminal profiles Portals IP Network Content Cache 3GPP Core Network UTRAN GERAN SGSN GGSN Streaming Client Live Encoders Figure 01: Network elements involved in a 2G/3G packet switched streaming service for GPRS core PCRF Operators IP network SGSN E-UTRAN P-GWUTRAN GERAN Content servers Conten
45、t caches User and terminal profiles Portal s UE PSS Client HSS MME Figure 02: Network elements involved in a 2G/3G and LTE packet switched streaming service for EPC 5 Service Requirements 5.1 General Stage 2 implementations are shown in TS 26.233 4 and stage 3 in TS 26.234 5. ETSI ETSI TS 122 233 V1
46、4.0.0 (2017-05)83GPP TS 22.233 version 14.0.0 Release 14The PSS uses a Client / Server model. The client controls the server by sending requests to the server, which responds to these commands. The PSS shall support downlink streaming. The PSS shall maintain backwards compatibility (i.e. a Rel-4 cli
47、ent should be able to interoperate with a Rel-5 server and vice versa). The PSS should consider interoperability with streaming elements (protocols, formats etc) already in use in other industries (e.g. the internet). The PSS shall support access to live content in addition to pre-authored content.
48、E.g. ability to listen to domestic radio station whilst abroad. It shall be possible for an operator to configure a PSS television service so that the typical channel switching time, from the end users perspective, does not exceed 2 seconds. A PSS television service may include live content offering
49、 or video on-demand content offering. PSS should allow support for time shifted live media consumption and bookmarks. The PSS should be able to support mechanisms that allow for efficient usage of transport resources (e.g. by compression of data in PSS). Such mechanisms should have no or minimal impacts on the core network and access networks. Note: Such mechanisms may not be available for all streamed content. The PSS shall: use open standards where these are available for Streaming service requirements use standa
