1、 ETSI TS 122 233 V15.0.0 (2018-07) 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 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 12
2、2 233 V15.0.0 (2018-07)13GPP TS 22.233 version 15.0.0 Release 15Reference RTS/TSGS-0122233vf00 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
4、 document shall 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
5、 within ETSI 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
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. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trad
8、emarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETMare trademarks 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. GSMand the GSM logo are trademarks registered and owned by the
9、GSM Association. ETSI ETSI TS 122 233 V15.0.0 (2018-07)23GPP TS 22.233 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if any,
10、 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 updates are available on
11、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 server) which are, or may
12、 be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no rig
13、ht to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Gene
14、ration 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 references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP
15、 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“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafti
16、ng Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 122 233 V15.0.0 (2018-07)33GPP TS 22.233 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs
17、terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 6g34 Entities involved in Streaming service . 6g35 Service Requirements . 7g35.1 General . 7g35.2 Media Types . 8g35.3 Multimedia Composition and Intera
18、ction . 9g35.4 Transport 9g35.5 Service Personalization 10g35.6 Service Management 10g36 Security. 11g37 Charging . 11g38 Digital Rights Management 11g39 Interworking . 11g310 Service Interaction 11g3Annex A (informative): PSS Examples . 12g3Annex B (informative): Change history . 14g3History 15g3ET
19、SI ETSI TS 122 233 V15.0.0 (2018-07)43GPP TS 22.233 version 15.0.0 Release 15Foreword 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
20、 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 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 approva
21、l; 3 or greater indicates 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 document. Introduct
22、ion 3G mobile systems, through the increase in available bandwidth, offer new possibilities and services. One of these new services will be the 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 trans
23、mitted to the client over the data network. Streaming services are required whenever instant access to multimedia information needs to be integrated into an interactive media application. This has to be seen in contrast to other multimedia services like for instance MMS where multimedia content is d
24、elivered to the user asynchronously by means of a “message”. Interactive applications that use streaming services include on-demand and live information delivery applications. Examples of the first category are music, music videos and news-on-demand applications. Live delivery of radio and televisio
25、n 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 with requests for information, it delivers that particular information as fast as possible, completes the transaction, disconnects and goes on to other reques
26、ts. 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. 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
27、be very large thus potentially causing storage problems in the client and resulting in long start-up latency. A streaming service improves this 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
28、streaming mechanism the PSS also encompasses the composition of media objects thereby allowing compelling multimedia services to be provisioned. For instance, a mobile cinema ticketing application would allow the user to view the film trailers. ETSI ETSI TS 122 233 V15.0.0 (2018-07)53GPP TS 22.233 v
29、ersion 15.0.0 Release 151 Scope This Technical Specification defines the stage one description of the Packet-switched Streaming Service (PSS). 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 po
30、ints of view but also includes the service capabilities of the PSS itself This TS includes information applicable to network operators, service providers, terminal and network manufacturers. This TS contains the core requirements for the Packet-switched Streaming Service (PSS), which are sufficient
31、to enable a range of services. 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
32、 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 pre
33、sent 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 Streaming Service (PSS): General Description”. 5 3GPP TS 26.234: “Transparent End to End Packet Switched Streaming Service (PSS): Protocol and Codecs”. 6 3GPP
34、 TS 21.905: “Vocabulary for 3GPP specifications”. 7 Void 8 IETF RFC 2046: “Multipurpose Internet Mail Extensions (MIME) part 2: media types”. 9 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
35、 a device (or service) that receives media objects and/or multimedia composition instructions from a server. Media Type: a type of media e.g. text, 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
36、 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 Multimedia Composition: the position in time and space of media objects relative to one another ETSI ETSI TS 122 233 V15.0.0 (2018-07)63GPP TS 22.233 versio
37、n 15.0.0 Release 15Multimedia Services: Services that handle several types of media such as audio and video in a synchronised way from the users point of view. A multimedia service may involve multiple parties, multiple connections, and the addition or deletion of resources and users within a single
38、 communication session. Server: in the context of the Streaming Service the server is a device (or service) that delivers media objects and/or multimedia composition instructions in response to client requests. Streaming: a mechanism whereby media content can be rendered at the same time that it is
39、being transmitted to the client over the data network. Streaming Service: an alternative way of referring to the PSS. Terminal Profile: Set of information about the physical capabilities of the terminal. User Profile: Is the set of information necessary to provide a user with a consistent, personali
40、sed service environment, irrespective of the users location or the terminal used (within the limitations of the terminal and the serving network). 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 th
41、e present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 6. CODEC Coder / DECoder MMS Multimedia Messaging Service PS Packet Switched PSS Packet Switched Streaming Service QoS Quality of Service UE User Equipment4 Entities involved in Streaming service T
42、he figures 01 and 02 shows the basic entities involved in the Streaming service and how they connect. Clients initiate the service and connect 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
43、on a network server and will be contacted at the initial set up. User Profile will provide the Streaming service with the users preferences. Terminal capabilities will be used by the Streaming service to decide whether or not the client is capable of receiving the streamed content. Portals are serve
44、rs allowing convenient access to streamed media content. For instance, a portal might offer content browse and search facilities. In the simplest 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
45、 elsewhere in the network. ETSI ETSI TS 122 233 V15.0.0 (2018-07)73GPP TS 22.233 version 15.0.0 Release 15Streaming Client Content Servers User and terminal profiles Portals IP Network Content Cache 3GPP Core Network UTRAN GERAN SGSN GGSN Streaming Client Live Encoders Figure 01: Network elements in
46、volved in a 2G/3G packet switched streaming service for GPRS core PCRF Operators IP network SGSN E-UTRAN P-GWUTRAN GERAN Content servers Content 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
47、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. The 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.
48、ETSI ETSI TS 122 233 V15.0.0 (2018-07)83GPP TS 22.233 version 15.0.0 Release 15 The PSS shall maintain backwards compatibility (i.e. a Rel-4 client should be able to interoperate with a Rel-5 server and vice versa). The PSS should consider interoperability with streaming elements (protocols, formats
49、 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. 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 or video on-demand content offering. PSS should allow support for time shifted live m
