1、 ETSI TR 122 906 V14.0.0 (2017-03) Universal Mobile Telecommunications System (UMTS); LTE; Study on IMS based peer-to-peer content distribution services (3GPP TR 22.906 version 14.0.0 Release 14) TECHNICAL REPORT ETSI ETSI TR 122 906 V14.0.0 (2017-03)13GPP TR 22.906 version 14.0.0 Release 14Referenc
2、e RTR/TSGS-0122906ve00 Keywords 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 enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The pr
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9、elease 14Intellectual 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 non-members, and can be found in ETSI SR 000 314: “Intellectual
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11、R 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 document. Foreword The present document may refer to technical
12、 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 and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.as
13、p. Modal verbs terminology In the present document “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 E
14、TSI deliverables except when used in direct citation. ETSI ETSI TR 122 906 V14.0.0 (2017-03)33GPP TR 22.906 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Definitions and abbreviati
15、ons . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 General Description 6g34.1 Overview 6g35 Use Cases . 8g35.1 Content-on-Demand Service for Large numbers of Online Users 8g35.1.1 Service Description . 8g35.1.2 Service Benefit 9g35.2 Live Streaming Service for Large numbers of Online Users 9g35.2.
16、1 Service Description . 9g35.2.2 Service Benefit 10g35.3 Efficient Software Distribution to large numbers of Users 10g35.3.1 Service Description . 10g35.3.2 Service Benefit 11g36 P2P Content Distribution Service Considerations in Fixed and Mobile Network . 11g36.1 Considerations on Types of User Equ
17、ipment . 11g36.2 Considerations on Types of Access Network . 12g36.2.1 Comparison of Different Access Networks 12g36.2.2 Network Peer Deployment Based on Types of Access Network 12g36.3 Interworking with the CDN 12g37 Potential Service Requirements 13g37.1 Requirements to the IMS CN subsystem 13g37.
18、2 Requirements to the IMS P2P application service . 13g38 Potential Charging Requirements . 13g39 Potential Security Requirements 14g310 Copy rights Issues 14g311 Conclusion 14g3Annex A: Change history 15g3History 16g3ETSI ETSI TR 122 906 V14.0.0 (2017-03)43GPP TR 22.906 version 14.0.0 Release 14For
19、eword This Technical Report (TR) has been produced by ETSI 3rd 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 b
20、e 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 indicates TSG approved document under change control. y the seco
21、nd 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. Introduction The development of fixed and mobile broadband technologies (e.g. G/E-PON all
22、ows about 100Mbps downlink and 100Mbps uplink, LTE allows the possibility of the speed up to 100Mbps downlink and 50 Mbps uplink) and more and more powerful mobile handsets have boosted popular usage of content distribution services (e.g. Live streaming and Content on Demand) on mobile handsets. Wit
23、h the explosive growth of media content consumption, the number of media servers to provide streaming services is required to be increased almost linearly with the number of users. In addition, centralized streaming media servers require considerable demands towards the bandwidth of the backbone IP
24、network. So its required to deploy more and more edge servers close to UEs to guarantee service quality with the increasing number of users. Peer-to-peer technology can be used between edge servers and UEs to relieve the above problem. Not only the edge servers handle the requests from its locally s
25、erved UEs, but also they can handle the requests transferred from the neighbouring edge servers. Similarly, if the UEs capabilities permit, the UE can offer spare uplink bandwidth and storage space while obtaining data, and uploads data to other requested destinations. Content is transmitted in a se
26、gmented manner, and most of the traffic can be spread across the edge of the network, which helps reduce the storage and bandwidth demands of centralized servers. So the system capability is improved along with the increasing number of edge servers and UEs. IMS, proposed by 3GPP, is viewed as a fixe
27、d and mobile convergence core network to provide multimedia services, and defines an infrastructure for user authentication, registration, service discovery, and multimedia session control and etc. So this Technical Report is aimed to study content distribution services in a Peer-to-Peer manner base
28、d on IMS from SA1s perspective and it is expected to identify the use cases and potential service requirements. ETSI ETSI TR 122 906 V14.0.0 (2017-03)53GPP TR 22.906 version 14.0.0 Release 141 Scope This Technical Report presents the overview, use cases and other aspects (e.g. Mobility, Charging, Se
29、curity and etc.) of IMS based Peer-to-Peer Content Distribution Services. And the potential service requirements will be identified. The objectives are to study IMS based content distribution services with the following aspects: - Identifying the user cases to describe how users, operators and servi
30、ce providers will may benefit by using/deploying IMS based content distribution services in fixed and mobile convergence networks with Peer-to-Peer technology; - Identifying service aspects where IMS network improvements are needed to cater for content distributed services for above accesses; - Iden
31、tifying mobility, charging and security related requirements in the case of content distribution services on IMS; - Identifying potential copyright issues; 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. Re
32、ferences 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 GS
33、M document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 22.101: “Service Aspects; Service Principles“. 3 3GPP TS 22.105: “Services and Service Capabil
34、ities“. 4 3GPP TS 22.233: “Transparent end-to-end packet-switched streaming service; Stage 1“. 5 3GPP TS 22.246: “Multimedia Broadcast/Multicast Service (MBMS) user services; Stage 1“. 6 3GPP TS 22.115: “Service aspects; Charging and billing“. 7 3GPP TS 22.220: “Service requirements for Home NodeBs
35、and Home eNodeBs“. 8 3GPP TS 21.201: “Technical Specifications and Technical Reports relating to an Evolved Packet System (EPS) based 3GPP system“. 9 Open IPTV Forum release 2: “Functional Architecture“.http:/www.openiptvforum.org/docs/OIPF-Functional_Architecture_v2_0-2009-09-08.pdf 10 ETSI TS 182
36、019 release 3: “TISPAN - Content Delivery Network (CDN) architecture“. 11 Draft ETSI RTS 182 027 release 3: “TISPAN - IPTV Architecture, IPTV functions supported by the IMS subsystem“. 12 Draft ETSI TR 182 010:“ Peer-to-peer for content delivery for IPTV services, analysis of mechanisms and NGN impa
37、cts“. ETSI ETSI TR 122 906 V14.0.0 (2017-03)63GPP TR 22.906 version 14.0.0 Release 143 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 x and the following apply. A term defined in the present document takes preceden
38、ce over the definition of the same term, if any, in TR 21.905 x. Peer-to-Peer: A concept related to A distributed network architecture composed of participants that make a portion of their resources (such as processing power, disk/cache storage or network bandwidth) directly available to other netwo
39、rk participants. Peers: The entities (e.g. UE, network entity) of both suppliers and consumers of resources, in contrast to the traditional client-server model where only servers supply, and clients consume. User Peer: The UE type of participants in the Peer-to-Peer network both providing services t
40、o other participants and requesting services from other participants, e.g. PC terminals. Network Peer: The participants in the Peer-to-Peer network deployed and controlled by operators/service providers both providing services to other participants (e.g. User Peer or Network Peer) and requesting ser
41、vices from other participants, e.g. the cache server deployed by operators/service providers. Content Source Server: An entity, which stores the source content, and provisions interface for other entities to fetch content. Content Cache Server: An entity, which caches partial/entire source content t
42、o be distributed to end users. The data on Content Cache Server is obtained from the Content Source Server or other Content Cache Servers via pre-distribution of the source content or upon users request. The Content Cache Servers usually are deployed at the edge of the network to accelerate content
43、distribution. Content Control Server: An entity, which performs the management of content indexing and control content distribution (e.g. how the source content is distributed from the Content Source Server to the Content Cache Servers). 3.2 Abbreviations For the purposes of the present document, th
44、e abbreviations given in TR 21.905 x 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 x. P2P Peer-to-Peer CDS Content Distribution Service CoD Content on Demand CDN Content Delivery Network G-
45、PON Gigabit Passive Optical Network E-PON Ethernet Passive Optical Network WLAN Wireless Local Area Network H(e)NB Home NodeB and Home eNodeB 4 General Description 4.1 Overview The following figure explains the network elements involved in IMS based Peer-to-Peer Content Distribution service and how
46、they interact with each other. IMS UEs initiate the content distribution service via fixed or mobile access network to IMS CN Subsystem. IMS UE will be redirected to the portal, which offers content indexing, browsing and searching functionalities. The content is ETSI ETSI TR 122 906 V14.0.0 (2017-0
47、3)73GPP TR 22.906 version 14.0.0 Release 14usually stored on content source servers (e.g. Network entities or UEs) and content cache servers are deployed close to the users to accelerate content distribution. User profile is stored in IMS and the terminal capabilities (e.g. processing capabilities,
48、screen size) are stored in Peer-to-Peer application service, when available. After IMS UEs request content distribution services, User Profile will provide the P2P application service with the users preferences and terminal capabilities will be used to decide whether or not the client is capable of
49、receiving the requested content. Content control is used to control how the content is distributed in the network and where IMS UEs can get the requested content. Content Source Server (2) After receiving Jessicas request, the P2P application queries the locations of film storage resources of “Transformer“, and then sends back the list of resource locations to Jessica. At the beginning the content cache server 2 has some initial parts of “Transformer“ (e.g. Part 1 and 2) and the content source server has all parts of it. So
