ETSI TS 182 028 V2.0.0 (2008-01)
`
`Technical Specification
`
`Telecommunications and Internet converged Services and
`Protocols for Advanced Networking (TISPAN);
`IPTV Architecture;
`Dedicated subsystem for IPTV functions
`
`Koninklijke KPN NV - Exhibit 2004
`Ericsson Inc. v. Koninklijke KPN NV PTAB-IPR2022-00557
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`
`

`

`2
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`Reference
`DTS/TISPAN-02049-NGN-R2
`
`Keywords
`architecture, IP, TV
`
`ETSI
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`Important notice
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`The present document may be made available in more than one electronic version or in print. In any case of existing or
`perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
`In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
`within ETSI Secretariat.
`
`Users of the present document should be aware that the document may be subject to revision or change of status.
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`
`If you find errors in the present document, please send your comment to one of the following services:
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`
`Copyright Notification
`
`No part may be reproduced except as authorized by written permission.
`The copyright and the foregoing restriction extend to reproduction in all media.
`
`© European Telecommunications Standards Institute 2008.
`All rights reserved.
`
`DECT™, PLUGTESTS™, UMTS™, TIPHON™, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
`for the benefit of its Members.
`3GPP TM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
`
`ETSI
`
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`

`

`3
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`Contents
`
`Intellectual Property Rights ................................................................................................................................ 5
`
`Foreword ............................................................................................................................................................. 5
`
`Introduction ........................................................................................................................................................ 5
`
`1
`
`2
`2.1
`2.2
`
`3
`
`4
`4.1
`4.2
`4.3
`4.3.1
`4.3.2
`4.3.3
`4.3.4
`4.3.5
`4.3.6
`
`Scope ........................................................................................................................................................ 6
`
`References ................................................................................................................................................ 6
`Normative references ......................................................................................................................................... 7
`Informative references ........................................................................................................................................ 7
`
`Abbreviations ........................................................................................................................................... 8
`
`NGN IPTV subsyste1n .............................................................................................................................. 8
`Concept and Architectural Approach ................................................................................................................. 8
`High Level Architecture Overview .................................................................................................................... 9
`Functional groups ............................................................................................................................................... 9
`Application Functions ................................................................................................................................... 9
`IPTV Service Control and Media Delivery Functions ................................................................................ 10
`Transport Functions .................................................................................................................................... 10
`End User Functions ..................................................................................................................................... 10
`Management Functions ............................................................................................................................... 10
`Content Provider Functions ........................................................................................................................ 10
`
`5
`5.1
`5.2
`5.2.1
`5.2.2
`5.2.3
`5.2.4
`5.2.5
`5.2.6
`5.2.7
`5.2.8
`5.2.9
`5.2.10
`5.2.11
`5.2.12
`5.2.13
`
`NGN dedicated IPTV subsystem functional architecture ....................................................................... 10
`Functional entities ............................................................................................................................................ 12
`Reference points ............................................................................................................................................... 14
`Tr - IPTV transactional ............................................................................................................................... 14
`Ct2 - UE facing IPTV control. .................................................................................................................... 15
`Sa - IPTV control and Media Control Function .......................................................................................... 15
`Ss - Service selection .................................................................................................................................. 15
`Xe - UE and IPTV Media Control Function ............................................................................................... 15
`Xp - IPTV Media Control Function and IPTV Media Delivery Function .................................................. 16
`Xd - UE and IPTV Media Delivery Function ............................................................................................. 16
`e2 - NASS access ........................................................................................................................................ 16
`e4 - NASS and RACS ................................................................................................................................. 16
`Gq'- RACS ................................................................................................................................................. 17
`Sh - IPTV applications and UPSF .............................................................................................................. 17
`Ud - IPTV applications and IUDF .............................................................................................................. 17
`Ug - access to federalized NGN data .......................................................................................................... 17
`
`6
`6.1
`6.2
`6.2.1
`6.2.2
`6.2.3
`6.2.4
`6.3
`6.3.1
`6.3.2
`6.4
`
`7
`
`8
`
`9
`9.1
`9.2
`
`Operational frainework ........................................................................................................................... 17
`IPTV delivery modes ........................................................................................................................................ 17
`Operational modes ............................................................................................................................................ 18
`Coupled mode ............................................................................................................................................. 18
`Decoupled mode ......................................................................................................................................... 19
`Redirect mode ............................................................................................................................................. 20
`Proxy mode ................................................................................................................................................. 21
`Service initialization ......................................................................................................................................... 22
`Functional steps for UE start-up ................................................................................................................. 22
`Service discovery and selection .................................................................................................................. 23
`Nomadism ........................................................................................................................................................ 24
`
`Security ................................................................................................................................................... 24
`
`Manage1nent ........................................................................................................................................... 25
`
`User data ................................................................................................................................................. 25
`IPTV profiles .................................................................................................................................................... 25
`User data location ............................................................................................................................................. 26
`
`ETSI
`
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`

`

`4
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`10
`
`Charging ................................................................................................................................................. 26
`
`11
`11.1
`11.2
`11.3
`11.4
`
`Procedures .............................................................................................................................................. 27
`Linear TV ......................................................................................................................................................... 27
`Multimedia content on demand (CoD) ........................................................................................................... 28
`Media broadcast with trick modes .................................................................................................................... 29
`Near CoD .......................................................................................................................................................... 31
`
`Annex A (informative):
`
`Interactions between other NGN services and IPTV services ................... 34
`
`Annex B (informative):
`
`Interaction procedure between IPTV and other service level
`subsystems ...................................................................................................... 35
`
`Annex C (informative):
`
`Presence attributes for IPTV ........................................................................ 37
`
`History .............................................................................................................................................................. 38
`
`ETSI
`
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`

`5
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`Intellectual Property Rights
`IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
`pertaining to these essential IP Rs, if any, is publicly available for ETSI members and non-members, and can be found
`in ETSI SR 000 314: "Intellectual Property Rights (JPRs); Essential, or potentially Essential, JP Rs 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 searches, has been carried out by ETSI. No guarantee
`can be given as to the existence of other IP Rs 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 Specification (TS) has been produced by ETSI Technical Committee Telecommunications and Internet
`converged Services and Protocols for Advanced Networking (TISPAN).
`
`The present document defines the TISP AN NGN Release 2 IPTV architecture: Dedicated subsystem for IPTV functions
`inNGN.
`
`Introduction
`The present document provides an architectural framework for the end-to-end Internet Protocol Television (IPTV)
`subsystem within the Next Generation Networks architecture. The IPTV framework is designed for interoperability with
`other NGN service subsystems and components.
`
`The present document identifies functional entities and reference point, which needs to be exposed from IPTV
`subsystem.
`
`ETSI
`
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`

`6
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`Scope
`
`1
`The present document describes the IPTV functional architecture and functions ofan IPTV system by and incorporating
`integration of IPTV functions subsystem within into the NGN architecture. For example, interactions and information
`flows between the IPTY system functional entities with and other functional entities will be specified. The specification
`starts from outlining high-level IPTV functional architecture, functional groups and is further developed into the more
`detailed functional architecture, reference points and operational modes.
`
`The architecture is intended to support requirements defined by the respective ETSI TISP AN requirement
`definitions (l] and allow integration new or existing IPTY solutions (such as those defined by DVB, ATIS !IF, ITU etc)
`within the NGN architecture.
`
`The resulting architecture should, should rely as much as possible on common components and integrates, coexist with
`other TISP AN NGN services.
`The following areas are covered:
`
`•
`•
`•
`•
`•
`•
`•
`
`Authentication and authorization .
`
`Content Protection (including DRM) .
`
`Capability exchange .
`
`Resource Management.
`
`Policy Management.
`
`Charging .
`
`User Profiles .
`
`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 only in the following
`cases:
`
`ifit 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 be found at
`http:// docbox.etsi.orn/Reference.
`
`For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
`the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
`reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
`method of access to the referenced document and the full network address, with the same punctuation and use of upper
`case and lower case letters.
`
`NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
`their long term validity.
`
`ETSI
`
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`

`7
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`2.1
`
`Normative references
`
`The following referenced documents are indispensable for the application of the present document. For dated
`references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
`(including any amendments) applies.
`
`[I]
`
`[2]
`
`[3]
`
`[4]
`
`[5]
`
`[6]
`
`[7]
`
`[8]
`
`[9]
`
`[10]
`
`[ 11]
`
`[12]
`
`[13]
`
`[14]
`
`ETSI TS 181 016: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); Service Layer Requirements to integrate NGN services and
`IPTV".
`
`ETSI TS 102 034: "Digital Video Broadcasting (DVB); Transport ofMPEG-2 TS Based DVB
`Services over IP Based Networks".
`
`ETSI TS 122 240: "Universal Mobile Telecommunications System (UMTS); Service requirements
`for 3GPP Generic User Profile (GUP); Stage 1 (3GPP TS 22.240".
`
`ETSI TS 123 240: "Universal Mobile Telecommunications System (UMTS); 3GPP Generic User
`Profile (GUP) requirements; Architecture (Stage 2) (3GPP TS 23.240)".
`
`ETSI ES 282 00 I: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); NGN Functional Architecture Release I".
`
`ETSI TS 182 027: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); IPTV Architecture; IPTV functions supported by the IMS
`subsystem".
`
`ETSI ES 282 019: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); Functional Architecture; Resource and Admission Control
`Subsystem (RACS)".
`
`IETF RFC 2782: "A DNS RR for specifying the location of services (DNS SRV)".
`
`ETSI ES 282 007: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); IP Multimedia Subsystem (IMS); Functional architecture".
`
`ETSI ES 282 004: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); NGN Functional Architecture; Network Attachment
`Sub-System (NASS)".
`
`ETSI ES 282 003: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); Resource and Admission Control Sub-system (RACS);
`Functional Architecture".
`
`ETSI TS 187 003: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); NGN Security; Security Architecture".
`
`ETSI ES 282 010: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TISPAN); Charging [Endorsement of3GPP TS 32.240 v6.3.0,
`3GPP TS 32.260 v6.3.0, 3GPP TS 32.297 v6.l.0, 3GPP TS 32.298 v6.l.0 and 3GPP TS 32.299
`v6.4.0 modified]".
`
`ETSI TS 132 240: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
`Telecommunications System (UMTS); Telecommunication management; Charging management;
`Charging architecture and principles (3GPP TS 32.240)".
`
`2.2
`
`[15]
`
`Informative references
`
`ETSI TR 187 008: "Telecommunications and Internet converged Services and Protocols for
`Advanced Networking (TI SPAN); NAT traversal feasibility study report".
`
`ETSI
`
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`

`

`8
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`Abbreviations
`
`3
`For the purposes of the present document, the following terms and abbreviations apply:
`
`BC
`BTV
`CA
`CF
`CoD
`DNG
`DRM
`FE
`GUP
`IMS
`IPTV
`IUDF
`MCF
`MDF
`NASS
`RACS
`SD&S
`UDAF
`UDF
`UE
`UPSF
`
`Broadcast
`Broadcast TV
`Conditional Access
`Customer Facing
`Content On Demand
`Delivery Network Gateway
`Digital Rights Management
`Functional Entity
`Generic User Profile
`IP Multimedia Subsystem
`IP Television
`IP User Data Function
`Media Control Function
`Media Delivery Function
`Network Attachment SubSystem
`Resource and Admission Control Subsystem
`Service Discovery & Selection
`User Data Access Function
`User Data Function
`User Equipment
`User Profile Server Function
`
`4
`
`NGN IPTV subsystem
`
`This clause outlines architectural approach adopted in the present document. The approach is then applied to introduce
`high level IPTV architecture and functional groups in NGN architecture.
`
`4.1
`
`Concept and Architectural Approach
`
`The document focuses on defining flexible functional architecture, which can:
`
`•
`
`•
`
`•
`
`allow development of new IPTV subsystem in NGN;
`
`integrate existing IPTV subsystem in NGN;
`
`extend both to support other NGN services;
`
`as defined in the service level requirements [l].
`
`The support for other NGN services has a wide meaning, e.g. the functional architecture would allow coupling
`functionality of IPTV subsystem with functionality of PES or IMS subsystem, which in-turn may support some IPTV
`features as defined in [ 6].
`
`In order to achieve high level of flexibility, the work is focused on identifying and standardizing functional entities and
`reference points, which needs to be exposed from IPTV subsystem to the rest ofNGN. Internal IPTV functional entities
`and reference points are identified and described for the completeness of the end to end architecture without intend to
`standardize them.
`
`The architectural approach considers IPTV subsystem as a functional area, which is integrated into NGN via
`standardized reference points and delivers service level requirements, while allowing internal flexibility and extensions
`for new service types.
`
`The IPTV dedicated subsystem is based upon IPTV domains defined in TS 181 016 [I], clause 4.1 IPTV Roles.
`
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`
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`

`9
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`4.2
`
`High Level Architecture Overview
`
`Figure I presents high-level NGN IPTV functional overview and location ofIPTV capabilities in the TISPAN NGN.
`The high level overview illustrates principal functional groups for NGN IPTV services. The functional groups map to
`IPTV roles as defined in clause 4.3.
`
`The functional groups are used to derive more detailed functional architecture, however, allocation of functions across
`operational and organizational boundaries will vary between implementations.
`
`Application Functions
`
`End-User
`Functions
`
`IPTV Service Control
`And Media Delivery
`Functions
`
`Manage(cid:173)
`ment
`Functions
`
`Content
`Provider
`Functions
`
`Transport Functions
`
`Figure 1: High-level NGN IPTV functional architecture
`
`4.3
`
`Functional groups
`
`In the context of the present document functional groups are used to describe several functional entities grouped
`together according to some condition, e.g. location in the certain functional layer.
`
`4.3.1
`
`Application Functions
`
`Within the present document, the term "Application Functions" includes IPTV and NGN Application Functions.
`
`NGN Applications: provides the user with rich multimedia applications distributed across multiple NGN subsystems.
`For example, session follow up or messaging exchange between fixed and mobile terminals, presentation of incoming
`calls and phone list management on TV, IPTV or gaming applications based on user presence. NGN applications also
`provide operators with centralized NGN management interface to multiple subsystems for content management,
`charging, interactions with IMS services, others. NGN applications may include application functions used across
`multiple service domains for applications interactions, e.g. IMS and IPTV interactions. NGN applications may include
`service mediation and coordination functionality.
`
`IPTV Applications: customer facing and operator facing.
`
`Customer facing IPTV applications provides the server side functions to enable customer facing IPTV applications,
`expose IPTV services to other NGN application and manage IPTV subsystem. Customer facing IPTV applications
`provide service provisioning, selection and authorization of IPTV services.
`
`Operator facing IPTV applications provide operator control over IPTV subsystem in NGN, content preparation and
`media management, content licensing, subscriber management, offer creation, user profiles.
`
`Server side IPTV applications expose IPTV services to NGN.
`
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`
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`
`

`

`10
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`4.3.2
`
`IPTV Service Control and Media Delivery Functions
`
`Enables operation oflPTV services in NGN. The key functionality of this layer is to provide, but not limited to, media
`distribution, selection and allocation of media delivery units, IPTV session control and management, interactions with
`other NGN components for admission control and resource allocation, as well as collecting charging and QoS
`information.
`
`Transport Functions
`
`4.3.3
`Transport Control Functions: contains common NGN components RACS and NASS, provides policy control,
`resource reservation and admission control as well as IP address provisioning, network level user authentication and
`access network configuration as defined in TISPAN. Transport layer definition includes definition from [5].
`
`Transport Processing Functions: the Transport Process Functions represents network access links and IP core. The IP
`core is in charge of data transmission with quality of service support.
`
`4.3.4
`
`End User Functions
`
`Customer transport: provides connection to one or multiple access networks and one or multiple home network
`segments.
`
`UE: provides user interactions and control over delivery of IPTV and other NGN services. IPTV terminal processes
`serviced multimedia and presents it in user acceptable format. User interactions may include service discovery,
`selection and authorization. Multimedia processing may include requesting multimedia asset in supported encoded
`format, decoding and presenting it to the user in acceptable format, trick mode operators, channel change.
`
`4.3.5
`
`Management Functions
`
`The IPTV Management Functions include:
`
`Service Fulfilment: the functions required to fulfil the IPTV service to the End-User.
`
`Service Assurance: the functions required to assure the IPTV service provided to the End-User.
`
`Service Billing: the functions required to ensure proper billing to the end user of delivered IPTV services.
`
`4.3.6
`
`Content Provider Functions
`
`The functions provided by the entity that owns or is licensed to sell content or content assets. These are normally the
`sourcing of content, metadata and usage rights.
`
`5
`
`NGN dedicated IPTV subsystem functional
`architecture
`The context of the IPTV architecture is represented "end to end" for completeness, starting from the UE on the left to
`the management functions and content providers functions on the right. However, the functions on the right
`(e.g. management and content provider) are outside this release of the specification.
`
`Dedicated NGN IPTV functional architecture is presented in figure 2.
`
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`

`

`11
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`I
`(
`UE & NGN
`Apps lntr
`
`i--~ - Application
`
`NGN
`
`I NGN App H-1 NGN
`lntr NGN &
`11 I UDAF
`UDF
`UE&DRM ~---~,~cFIPTVApps
`lntr ~ - - - - - - t - - - - - - - - - - - - - - - - - - - - - i - - . , , -
`
`NGN Applications Ug_
`,
`
`Tr
`
`I
`
`I
`
`I
`
`Ss
`I
`
`i
`I IF'f' Service Control a Id pe!ivery F~nctions
`
`I
`I
`I
`
`I
`o
`\ _______________ _
`
`I
`
`Ct2 n IPTV H---------s~-1-i-- ] Media I
`
`Cl) s::
`.2
`0
`s::
`::I u. ... Q)
`"C ·;;
`0 ... a. .. C:
`
`Q)
`
`C:
`0
`(..)
`
`Cl) s::
`0 n s::
`::I u. ... s::
`
`Q)
`
`E
`Q)
`0)
`"' s::
`"' ::i:
`C:
`E
`"' s::
`::i:
`.!l!
`"C
`Q)
`::i:
`
`Q)
`
`Q)
`
`UE
`
`Con mer
`Tran port
`
`Control
`
`j
`]
`. ,
`~~--~ ~---i Media Control
`
`1
`
`Function
`Xp
`
`I Media Delivery I
`r
`
`Function
`
`Distribution
`- - -'---~-____)
`1
`I
`I
`I
`_____ I
`
`I
`~ - - - - - - - -~ 2 - - - - - - 1 - -G q '
`~-· __,___
`:
`(
`••• Configur~tio_n ············cpASS e4'
`I
`RACS
`: .__ ___ _,
`I
`
`& Authent1cat10n
`
`I
`
`Transport Prpcessing Functions
`d -+< - \ - - - - - - - - - - -~
`
`Figure 2: NGN IPTV functional architecture
`
`...
`"' .c:
`<.>
`
`Service Layer
`
`Transport Layer
`
`l
`
`The figure also includes reference points using dotted lines, which are shown for completeness and outside the present
`document: examples are provided in informative annex showing how such reference points can be used. The two
`reference point outside the scope of the present document shown for completeness are NGN & Customer facing IPTV
`application interactions and Configuration and Authentication.
`
`The focus of the current specification in on the functions in the middle, namely IPTV functions in the service layer and
`in the transport layer for integration into NGN.
`
`The functions performed by the service layer are grouped into two levels:
`
`•
`
`•
`
`the application functions for provisioning an IPTV service consumption by a given user (e.g. service
`selection, where 'selection' is used in a wide sense, e.g. including the parental control rules, others);
`
`the IPTV service control and delivery functions for the execution of a given instance of an IPTV service
`during service consumption (e.g. the user can experience and control the delivery ofa given media content)
`and for the selection of Media Control Function and media delivery during the IPTV service establishment.
`
`The functions performed in the transport layer apply the principles ofTISPAN NGN networks transport layer (see
`definition in [5]) to enable policy control, resource reservation, admission control, IP address provisioning, network
`level user authentication. The relationship between media management, media distribution and media preparation
`functions are presented for the completeness. However, interface definitions are outside the scope of the current release,
`which is represented by the dotted lines.
`
`ETSI
`
`Koninklijke KPN NV - Exhibit 2004
`Ericsson Inc. v. Koninklijke KPN NV PTAB-IPR2022-00557
`Page 11 of 38
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`

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`12
`
`ETSI TS 182 028 V2.0.0 (2008-01)
`
`5.1
`
`Functional entities
`
`The functional groups presented on figure 1 contain the following functional entities used to deliver NGN IPTV
`services.
`
`NGN Application FE: application providing functionality across single or multiple subsystem, e.g. messaging
`exchange between fixed and mobile terminals, presentation of incoming calls and phone list management on TV, IPTV
`gaming applications based on user presence, NGN applications may include service mediation and coordination
`capabilities.
`
`NGN User Data Access FE (NGN UDAF): The NGN UDAF knows the location and gives access to user data. An
`instance of it can be either GUP server if data federalization approach is selected, known NGN application, or other
`legacy solutions.
`
`User Profile Server FE (UPSF): The user profile server function (UPSF), as defined in ES 282 001 [5], is responsible
`for hosting a set of user related information, amongst service-level user identification, numbering and addressing
`information., service-level user security information: access control information for authentication and authorization,
`service-level user location information at inter-system level, service-level user profile information.
`
`NGN Application User Data FE (NGN App UDF): NGN App user data function is responsible for handling NGN
`application and user data. NGN App UDF allows integration of application data across NGN applications either using
`3GPP data federalization ([3] and [4]), known NGN application, e.g. UPSF, or other legacy solution.
`
`IPTV User Data FE (IUDF): IPTV user data function. IPTV user data function is responsible for handling dedicated
`IPTV user data. IUDF allows integration of user data from IPTV subsystem into NGN either using 3GPP data
`federalization ([3] and [4]), known NGN application, e.g. UPSF, or other legacy solution.
`
`Customer Facing IPTV Application FE: provides IPTV service provisioning, selection and authorization:
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`•
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`•
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`•
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`•
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`•
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`•
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`Provide IPTV services offer.
`
`Enable navigation and selection.
`
`Verify access right according to the lPTV user profile, e.g. stored in the UPSF.
`
`Provides authenticatio