ETSI TS 185 009 V2.2.1 (2009-05)

Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN) Architecture and reference points of a customer network device for IMS based IPTV services

RTS/TISPAN-05026-NGN-R2

General Information

• Status: Published
• Publication Date: 18-May-2009
• Technical Committee: TISPAN 5 - TISPAN NGN Home Networking
• Current Stage: 12 - Completion
• Due Date: 01-May-2009
• Completion Date: 19-May-2009

Standards Content (Sample)

ETSI TS 185 009 V2.2.1 (2009-05)
Technical Specification


Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
Architecture and reference points of a customer network
device for IMS based IPTV services

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2 ETSI TS 185 009 V2.2.1 (2009-05)



Reference
RTS/TISPAN-05026-NGN-R2
Keywords
architecture, IMS, IP, TV
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3 ETSI TS 185 009 V2.2.1 (2009-05)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .5
1 Scope.6
2 References.6
2.1 Normative references.6
2.2 Informative references.7
3 Definitions and abbreviations.7
3.1 Definitions.7
3.2 Abbreviations.7
4 High level functional architecture for IPTV-CNDs .9
4.1 Architecture layers.9
4.1.1 Transport layer.9
4.1.2 Service layer.9
4.1.3 Application and User Experience layer .10
4.2 IPTV operating modes.10
5 IPTV Customer Network Device Architecture .10
5.1 IMS based IPTV compatible devices .11
5.1.1 Detailed Architecture.11
5.1.1.1 Transport Layer Functions .12
5.1.1.1.1 Network attachment functions.12
5.1.1.1.2 Transfer functions.12
5.1.1.1.3 Transport functions.12
5.1.1.2 Service layer functions.12
5.1.1.2.1 IPTV-CND-SIP UA: IPTV Customer Network Device SIP UA.12
5.1.1.2.2 IPTV-CND-SPM: IPTV Service Profile Management function.12
5.1.1.2.3 IPTV-CND-MDP: IPTV Customer Network Device MetaData Processing .12
5.1.1.2.4 IPTV-CND-MPC: IPTV Customer Network Device Media Player Control.13
5.1.1.2.5 IPTV-CND-MD: IPTV Customer Network Media Delivery .13
5.1.1.2.6 IPTV-CND-CMM: Configuration Management and Monitoring .13
5.1.1.2.7 IPTV-CND-PPF: IPTV Customer Network Device - Plug and Play Function .13
5.1.1.2.8 IPTV-CND-cPVR: IPTV client PVR Function .14
5.1.1.3 Applications and user experience layer functions .14
5.1.1.3.1 IPTV Applications.14
5.1.1.3.2 IPTV-CND-SPA: Service Profile Application .14
5.1.1.3.3 IPTV-CND-MDA: MetaData Application.14
5.1.1.3.4 IPTV-CND-BF: Browser Function.15
6 Reference points.15
6.1 Reference points for IMS based IPTV compatible devices.15
6.1.1 Transport layer Reference points .15
6.1.1.1 Transport Reference points .15
6.1.1.2 Network attachment Reference points .15
6.1.2 Service layer Reference points.15
7 The IPTV - CND Data Model .16
8 Deployment's scenarios.16
8.1 Option 1.16
8.2 Option 2.16
9 Information Flows.17
9.1 Information flows between IPTV-CND and NGN.17
9.1.1 Example message flows on X .17
a
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4 ETSI TS 185 009 V2.2.1 (2009-05)
9.1.2 Example message flows on U .18
t
9.1.3 Example message flows on G .18
m
9.1.3.1 Registration.18
9.1.3.2 Session Initiation and Termination .18
9.1.3.3 IPTV Service Action Data Delivery.18
9.1.4 Example message flows on X and X .19
c d
9.1.4.1 Message flows for CoD service .19
9.1.4.2 Message flows for BC service.19
9.1.5 Example message flows on e .20
3
9.1.6 Example message flows on e .20
1
9.2 Information flows between IPTV-CND and CNG .21
9.2.1 Example message flows on C .21
9.2.1.1 Message flows for device and service information exchange .21
9.2.1.2 Message flows for device control.22
9.2.2 Example message flows on G .23
m'
9.2.2.1 Registration.23
9.2.2.2 IPTV Service Action Data Delivery.23
9.2.3 Example message flows on e .23
1'
9.2.4 Example message flows on e .23
3'
9.2.5 Example message flows on a .23
u
Annex A (informative): Bibliography.24
Annex B (informative): Change history .25
History .26

ETSI

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5 ETSI TS 185 009 V2.2.1 (2009-05)
Intellectual 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 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 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 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 Specification (TS) has been produced by ETSI Technical Committee Telecommunications and Internet
converged Services and Protocols for Advanced Networking (TISPAN).
Introduction
The present document describes the main type of IMS based IPTV Customer Devices that take part in Customer
Premises Network in terms of general architecture and in terms of reference points with the NGN and CNG.
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6 ETSI TS 185 009 V2.2.1 (2009-05)
1 Scope
The present document defines the stage 2 Customer Network Devices for IPTV services (IPTV-CND) specifications. It
is therefore addressing the overall architecture of the customer network device (CND) enabling the IPTV service
consumption. The architectural definition is covering both transport and service layer related functionalities. The
reference points between the CND and the Customer Network Gateway (CNG) are also part of the specifications.
The 2 solutions elaborated specified in TS 182 027 [2] and TS 182 028 [4] are IMS based IPTV and IPTV Dedicated
Subsystem solutions but only the IMS based IPTV solution is considered in the present document.
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:
- 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 be 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 document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TS 181 016: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Service Layer Requirements to integrate NGN services and
IPTV".
[2] ETSI TS 182 027: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); IPTV Architecture; IPTV functions supported by the IMS
subsystem".
[3] ETSI TS 183 063: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); IMS-based IPTV stage 3 specification".
[4] ETSI TS 182 028: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); IPTV Architecture; Dedicated subsystem for IPTV functions".
[5] ETSI TS 183 064: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Dedicated IPTV subsystem stage 3 specification".
[6] ETSI TS 185 003: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Customer Network Gateway Architecture and Reference
Points".
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7 ETSI TS 185 009 V2.2.1 (2009-05)
[7] ETSI TS 185 006: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Customer Devices architecture and interfaces and Reference
Points".
[8] ETSI ES 282 001: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); NGN Functional Architecture".
[9] ETSI TS 181 005: "Telecommunications and Internet Converged Services and Protocols for
Advanced Networking (TISPAN); Service and Capability Requirements".
2.2 Informative references
The following referenced documents are not essential to the use of the present document 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 185 004: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); High level customer network architectures".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Customer Network Device (CND): physical device enabling service(s) usage
NOTE: CNDs can be dedicated to the internet, conversational and audio-video services, but they could be also
Consumer Electronics equipment and other devices which may have nothing to do with these premium
services (e.g. services performing a content sharing within a CPN, typically between a PC and a music
system, through the CNG).
Customer Network Gateway (CNG): gateway between the Customer Premises Network (CPN) and the Access
Network able to perform networking functions from physical connection to bridging and routing capabilities, but also
possibly implementing functions related to the service support
Customer Premises Network (CPN): in-house network composed by customer network gateway, customer network
devices, network segments (physical wired or wireless connections between customer network elements), network
adapters (performing a L1/L2 conversion between different network segments) and nodes (network adapters with L3
routing capabilities)
IPTV services Customer Network Device (IPTV-CND): physical device enabling consumption of IPTV service(s)
NOTE: IPTV-CNDs are dedicated to the TV like audio-visual services such as live TV or On demand.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACF Access Configuration Function
AtF Attachment Function
B2BUA Back-to-Back User Agent
BC BroadCast
BF Browser Function
BTA Broadcast TV Application
C-BGF Core Border Gateway Function
CDA CoD Application
CF Configuration Function
CMF Configuration and Maintenance Function
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8 ETSI TS 185 009 V2.2.1 (2009-05)
CMM Configuration Management and Monitoring
CND Customer Network Device
CNG Customer Network Gateway
CNGCF Customer Network Gateway Configuration Function
COD Content On Demand
CPA Client PVR Application
CPN Customer Premises Network
cPVR client PVR
DHCP Dynamic Host Configuration Protocol
DLNA Digital Living Network Alliance
EPG Electronic Programme Guide
ESG Electronic Service Guide
IGMP Internet Group Management Protocol
IMS IP Multimedia Subsystem
IPTV Internal Protocol TeleVision
IPTVF IPTV Function
LAF Local Authentication Function
MD Media Delivery
MDA MetaData Application
MDF Media Delivery Function
MDP MetaData Processing
MPC Media Player Control
MPPF Media Packet Processing Function
NACF Network Access Configuration Function
NAPT Network Address and Port Translation
NAT Network Address Translation
NGN Next Generation Network
NPA N-PVR Application
NPVR Network Personal Video recorder
NTF NAPT Traversal Function
PCF Policy Control Function
P-CSCF Proxy Call Session Control Function
PPF Plug and Play Function
PVR Personal Video Recorder
QoE Quality of Experience
QoS Quality of Service
RTP Real Time Protocol
RTSP Real Time Streaming Protocol
SCF Session Control Function
SDF Service Discovery Function
SIP Session Initiation Protocol
SPA Service Profile Application
SPM Service Profile Management
SSF Service Selection Function
STB Set Top Box
UA User Agent
UE User Equipment
UPnP Universal Plug and Play
VOD Video On Demand
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9 ETSI TS 185 009 V2.2.1 (2009-05)
4 High level functional architecture for IPTV-CNDs
The high level functional architecture of IPTV-CND is composed of 3 layers as represented in figure 4.1.
4.1 Architecture layers
CND
Application & User Experience Layer
Service Layer
Transport Layer

Figure 4.1: Architecture layers
4.1.1 Transport layer
This layer comprises functional entities that provide relevant IPTV transport level functions such as network attachment
and media processing and streaming functions.
4.1.2 Service layer
This layer comprises functional entities that provide relevant IPTV functionality to applications above and also include
entities that are used for management and control of platform itself. Depending on the type of services, the service layer
entity must communicate either with other devices in the customer network or the external network using the transport
layer. Service layer entities do not have a direct user interface and may be controlled via appropriate applications layer
entities.
Examples include:
• Media Management function.
• Service Discovery function.
• Platform security function.
• CA/DRM function.
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10 ETSI TS 185 009 V2.2.1 (2009-05)
• Configuration and Management function, etc.
4.1.3 Application and User Experience layer
This layer comprises IPTV applications that have user interface (user driven input and /or output) and use the services
provided by the underlying Service Layer to drive end user experience.
Examples of applications include:
• VOD.
• Broadcast TV.
• IPTV Service Guide interface, etc.
The user may be a customer or a service operator.
For the service operator, these functions may include service specific functions such as measurement applications
(e.g. user satisfaction).
4.2 IPTV operating modes
IPTV CNDs can be simple terminals connected to the NGN or be part of a CPN in connection with the CNG. Different
configuration are discussed in TR 185 004 [i.1]. Consequently, the IPTV CND can work in different modes in relation
with the CNG.
• Bridged mode: In this mode, the IPTV CND is working in compliance with TS 183 063 [3] and is connected
to the NGN network or connects to the NGN via a CNG operating in bridged mode. In bridged mode of
operation, the CNG provides only L1-L2 functionality. The CND connects over G to the NGN.
m
• Routed mode: In this mode, the IPTV CND connects to the NGN via a CNG operating in routed mode and is
capable to interact with other devices in the CPN with other protocols above L3. In routed mode of operation,
the CNG includes routing and service layer functionality as well (L3 and above). The routed mode shall be
related to an authentication session. A session operating in one of the following routed modes can only operate
in one of them at the same time:
- NGN mode: IPTV CND connects directly to the NGN through the CNG over G . The CNG-PCF and
m
CNG-NFF as defined in ETSI TS 185 003 [6] may perform functionality such as NAPT and CNG
internal QoS.
- CPN mode: IPTV CND connects to the NGN through CNG over G . The CNG-SIP Proxy B2BUA,
m'
CNG-ACF, CNG-PCF as defined in TS 185 003 [6] may perform functionality such as NAT/FW
traversal, CNG internal QoS or IETF SIP to IMS SIP conversion.
• Intra CPN mode: At service layer, the 2 devices interact with or without the support of the CNG.
NOTE: Specifications for the intra CPN mode are not part of the present document but in this case, for example,
IPTV CND could follow DLNA (Digital Living Network Alliance) interoperability guidelines.
5 IPTV Customer Network Device Architecture
The present document categorizes IPTV-CNDs into two types depending on TISPAN IPTV solutions that have been
developed by WG2. They are:
• Devices compatible with the IPTV dedicated subsystem solution.
• Devices compatible with the IMS based IPTV solution.
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11 ETSI TS 185 009 V2.2.1 (2009-05)
Devices compatible with IPTV dedicated subsystem solution:
This category of IPTV CNDs includes IPTV capable device which can be utilized in conjunction with IPTV services
delivered in compliance with TS 182 028 [4] and TS 183 064 [5].
Devices compatible with the IMS based IPTV solution:
This category of IPTV CNDs includes IPTV capable device which can be utilized in conjunction with IPTV services
delivered in compliance with TS 182 027 [2] for "IPTV functions supported by the IMS subsystem" for the architecture
aspects and TS 183 063 [3] for protocols aspects.
Only IMS based IPTV compatible devices are considered for detailed description in the present document.
5.1 IMS based IPTV compatible devices
IMS based IPTV compatible means compliance with TS 182 027 [2].
5.1.1 Detailed Architecture
CND
Application & User Experience Layer
IPTV
browser
IPTV Applications
Service Metadata
Applications
(n & cPVR, COD,
Profile App App
BC)
Browser
Service Layer
Configuration
Service
cPVR Management
Profile
& Monitoring
Management
Media Player
Plug and play
SIP User MetaData
Control and
functions
Agent Processing
Media Delivery
Transport Layer
Transport
Network
QoS ctrl
Attachment
Control
Ut
Transport
Xa
Media /Packet
Processing G G ’
Processing Function m, m
x x (Dj)
c, d
QoS
e e ’
3, 3 ,
proces
e e ’
1, 1 ,
C
Dj’

Figure 5.1: Detailed IPTV CND architecture
NOTE: Entities in a given layer are interfacing/interacting with one or more functional entities in layers below it
in order to accomplish the given function. Figure 5.1 does not depict all these internal
interfaces/interactions which are implementation specific.
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12 ETSI TS 185 009 V2.2.1 (2009-05)
5.1.1.1 Transport Layer Functions
5.1.1.1.1 Network attachment functions
IPTV CND attachment functions are compliant with the specifications for CNDs TS 185 006 [7]. They include:
• IPTV-CND-CMF: Customer Network Device - Configuration and Maintenance Function.
• IPTV-CND-AtF: Customer Network Attachment Function.
• IPTV-CND-LAF: Customer Network Device - Local Authentication Function.
5.1.1.1.2 Transfer functions
IPTV CND transfer functions are compliant with the specifications for CNDs TS 185 006 [7].
• IPTV-CND-NTF: NAPT Traversal Function.
5.1.1.1.3 Transport functions
5.1.1.1.3.1 IPTV-CND-MPPF: IPTV Customer Network Device-Media Packet Processing Function
The MPPF is the termination point for media flows encrypted or not encrypted, over the D interface connecting the UE
j
to the NGN C-BGF as defined in ES 282 001 [8].
NOTE 1: The handling of encrypted media flows is out of scope of this release.
NOTE 2: This function is providing support for NAT traversal such as the media port punching mechanisms and
also for the usage of IGMPv3.
5.1.1.1.3.2 IPTV-CND-QOS: IPTV Customer Network Device-QoS Function
The IPTV CND should support the following set of QoS functions for egress traffic:
1) Traffic classification based on rules defined by the NGN service provider, access network provider or
connectivity provider (business role definitions are defined in TS 181 005 [9]).
2) Packet marking based on the different service classes.
5.1.1.2 Service layer functions
NOTE: The security aspects are not specified in this release. The term security is to be taken here in a general
sense covering several aspects including content protection, conditional access, privacy and parental
control.
5.1.1.2.1 IPTV-CND-SIP UA: IPTV Customer Network Device SIP UA
This block implements the G , G interfaces on IPTV CND compatible with the IMS based IPTV solution. This SIP
m m'
UA shal
...