1、 ETSI TR 102 805-2 V1.1.1 (2009-11)Technical Report User Group;End-to-end QoS management at the Network Interfaces;Part 2: Control and management planes solution -QoS continuityETSI ETSI TR 102 805-2 V1.1.1 (2009-11)2Reference DTR/USER-00029-2 Keywords control, interface, management, QoS, signalling
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8、d by the GSM Association. ETSI ETSI TR 102 805-2 V1.1.1 (2009-11)3Contents Intellectual Property Rights 4g3Foreword . 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 6g34 User intera
9、ction: existing limitation and user oriented dynamic management 7g34.1 Information and subscription 7g34.2 Information and signalling . 7g34.3 Information and management . 8g34.4 User centric approach: dynamic management (convergence of control and management planes). 8g35 User-centric oriented QoS
10、signalling . 9g35.1 E2E QoS support: VPSN 9g35.2 E2E QoS Provisioning 10g35.3 Dynamic QoS signalling during exploitation . 12g36 User-centric oriented QoS management . 14g36.1 E2E session binding . 14g36.2 Diameter-based interface 17g36.3 AVPs 18g36.3.1 Multi-service-credit-control AVP . 19g36.3.2 P
11、olicy-Rule-Definition AVP . 19g36.3.3 Media-Component-Description AVP . 20g36.3.4 Binding information AVP . 20g37 User-centric oriented QoS continuity . 21g38 User E2E QoS Measurement 22g3Annex A: IPTV . 24g3Annex B: Bibliography 26g3History 27g3ETSI ETSI TR 102 805-2 V1.1.1 (2009-11)4Intellectual P
12、roperty 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 Property Rights (IPRs)
13、; 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 (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searche
14、s, 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 This Technical Report (TR) has been produced by ETSI
15、 User Group (USER). The present document is part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1 i.1. ETSI ETSI TR 102 805-2 V1.1.1 (2009-11)51 Scope The present document provides a study of exchange feasibility of the user-related QoS information aiming at E2
16、E QoS continuity. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. Non-specific reference may be made only to a complete document or a part thereof and
17、 only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Referenced documents which are not found to be publicly available in the expected location might b
18、e found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are indispensable for the application of the present docume
19、nt. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. Not applicable. 2.2 Informative references The following referenced documents are not essential to the use of the present document
20、but they assist the user with regard to a particular subject area. For non-specific references, the latest version of the referenced document (including any amendments) applies. i.1 ETSI TR 102 805-1 (V1.1.1): “User Group; End-to-end QoS management at the Network Interfaces; Part 1: Users E2E QoS -
21、Analysis of the NGN interfaces (user case)“. i.2 IETF RFC 3588: “Diameter Base Protocol“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: AmbientGrid: information inference (AmbientGrid) based on the profiles matchi
22、ng, to structure with grid covering the needed user centric environment capable QoS: level of QoS that the provider is able to provide ETSI ETSI TR 102 805-2 V1.1.1 (2009-11)6demanded QoS: assertion of the quality level requested by the user desirable QoS: level of QoS required by user for his servi
23、ce infosphere: decisional knowledge base managing, in real time, all the personalization and ambient environment information. offered QoS: assertion of QoS level that the provider proposes to provide perceived QoS: level of quality experienced by the user provided QoS: level of quality that the prov
24、ider has agreed to make available to the user session mobility: ability to keep the continuity of a service regardless the mobility of the terminal, of the access network, of the core network or of any service components as well as the Service Provider user-centric session: period of communication b
25、etween one user and another or other users or servers characterized by a starting time and a termination time, including setting up the relation of the user equipment, access network, core network and services user mobility: ability for a subscriber to move to different physical locations and be abl
26、e to use one or more devices connected to one or more access networks to gain access to their services without interruption userware: innovative user centric middleware (userware) enhancing the seamless feasibility along with the location and activity, personalization and users ambient contexts 3.2
27、Abbreviations For the purposes of the present document, the following abbreviations apply: 3GPP The 3rd Generation Partnership Project AF Application Function AS Application ServerAVP Attribute-Value-Pairs A-RACF Access Resource and Admission Control Function BGS Border Gateway Services CCR Credit-C
28、ontrol RequestCPU Central Processing Unit DIAMETER AAA protocol NOTE: See RFC 3588 i.2. DIFFSERV Differentiated services (IETF) E2E End-to-End ETSI European Telecommunications Standards Institute GPRS General Package Radio Service HSS Home Subscriber Server IETF Internet Engineering Task Force IMS I
29、P based Multimedia Subsystem INTSERV Integrated Services (IETF) IP-CAN IP Connectivity Access Network IPTV Internet Protocol TeleVision MBB Make Before Break MCF Media Control Function MDF Media Delivery Function NA(P)T Network Address (and Port) Translation NA(P)T-PT Network Address Translation - P
30、rotocol Translation NGN Next Generation Network NSIS Next Steps In Signalling NSLP NSIS Signalling Layer Protocols PAN Personal area network P-CSCF Proxy CSCF PCRF Policy and Charging Rules Function ETSI ETSI TR 102 805-2 V1.1.1 (2009-11)7PDP Packet Data Protocol QoS Quality of Service QSPEC QoS Spe
31、cification RACF Resource and Admission Control Function RACS Resource and Admission Control Subsystem RCEF Resource Control Enforcement Function S-CSCF Server - Call Session Control Function SDF Service Discovery Function SDF Service Data Flow SDP Session Description Protocol SIP Session Initiation
32、Protocol SLA Service Level Agreement SPDF Service Policy Decision Function SSF Service Selection Function UE User Equipment UMTS Universal Mobile Telecommunications Systems UPSF User Profile Server Function VPSN Virtual Personal Service Network VSC Virtual Service Community 4 User interaction: exist
33、ing limitation and user oriented dynamic management Nowadays, end users desire to access their services, without interruptions and in a continuous way. Moreover, it has to be taken into account dynamic adaptation of services and management of user-centric session according to user preferences and di
34、fferent types of mobility. In this clause, an analysis is carried out on insufficiencies of existing works that are mainly of informational order. In fact, a complete information is needed at the moment of subscription (clause 4.1). The signalling would be more efficient if it has the dynamic inform
35、ation (clause 4.2). And the management would be more flexible if the information IS coherent between the cross layers (clause 4.3). Finally, a user-centric oriented dynamic management (clause 4.4) is defined. 4.1 Information and subscription User Profile Server Function (UPSF) defined in ETSI and HS
36、S defined in 3GPP store subscribed users profile information related to one or more service control subsystems and applications. But they do not contain complete profile information such as connectivity subscriptions and PAN (Personal area network) information. In order to offer services adapted to
37、user preferences, the pertinent resource information and users preference information are needed with the visibility of terminal device, network and service to choose the adequate component (terminal, network, service) to use in a user-centric session. Through interaction with such user system, the
38、pertinent users data can be reached and maintained. 4.2 Information and signalling The QoS NSLP proposed by NSIS work group in IETF provides flexibility on patterns of signalling messages that are exchanged. Various QoS models can be used in the network, but these do not affect the specification of
39、the QoS NSLP protocol. The QSPEC carries a collection of objects that can describe QoS specifications in a number of different ways, namely QoS Desired, QoS Available, QoS Reserved and Minimum QoS. A generic template contains object formats for the QoS description, which is designed to ensure intero
40、perability when using the basic set of objects. NSIS has been focused on developing a protocol to manipulate QoS states of network resource along the data path in the network. Nevertheless their work on QoS description does not cover service layer with which user interacts more directly. To circulat
41、e QoS information in a session, SIP has been designed in conformance with the Internet model in the control plane. As far as QoS is concerned, SIP uses SDP to describe the media in the session and negotiate QoS requested. Moreover, SIP can filter information according to the User Profile to implemen
42、t application servers before establishment of a session. However, is it able to describe the behaviour of service component and communicate the QoS state information between the components in order to re-provisioning services during an active session in a mobility environment according to the users
43、preferences. ETSI ETSI TR 102 805-2 V1.1.1 (2009-11)8A dynamic management of resource information and users preference information is needed to adapt component (terminal, network, service) during a user-centric session. For the service continuity in an E2E session, the signalling should support broa
44、dening personalisation coverage with QoS through composition of service in service levels. 4.3 Information and management In the management plane, protocol Diameter is used to carry the information of authorization, policy control and charging etc. The QoS related information can also be mapped to D
45、iameter AVP. Indeed, if the user wants always to have the dynamic selection of connection and accessibility by any of its identifiers, to have the most appropriate service components in the session with different terminals and different bearers according to different of SLAs, a mechanism is needed t
46、o ensure a coherent management of the user information including users preference between each level (cross-layer). This mechanism could collaborate with E2E signalling. 4.4 User centric approach: dynamic management (convergence of control and management planes) Generally, the lifecycle of QoS manag
47、ement consists of QoS conception, resource provisioning before the service delivery, transfer of the service data, and management. QoS conception consists of analysis of the systems QoS need and QoS context in order to make available the QoS-related structured information with its access interface.
48、QoS provisioning performed before service delivery covers QoS negotiation which is responsible for issuing an agreement between the components to support the QoS involved in the service, admission control which is used to compare the required resource for the component with the available resource in
49、 the system, and resource reservation which arranges for the allocation of resources in response to the user requirements and the agreed QoS levels. When provisioning is achieved, management related functions begin with service delivery in a static way. They analyse the tracked QoS achieved actually and compare it to the initial requirements or agreements. QoS management aims at satisfying user QoS expectation on the basis of a set of functions. Thus it is important to determine at what time should QoS management be considered and what actions to be perf
