Transcript Telco or Internet IP Networks

ITU-T Workshop on NGN
NGN IP-based networks
TELCO and/or INTERNET?
From an ETSI Point of View
Alistair Urie
ETSI Operational Co-ordination Group Chairman
Alcatel S.A.
Geneva 9-10 June 2003
http://www.etsi.org
The two Views
 The Internet View
 Interconnected networks will mainly serve to provide end-to-end
connectivity, carrying packets of data end-to-end between smart
terminals, and establishing end-to-end sessions under terminal
control as required.
 Services will be provided by interaction between end-user
equipment (e.g ICQ/MSN style voice +, web access)
 Legacy carrier-based services will be in decline
 The “Telco” View
 Services will primarily be provided across interconnected
networks operated by multimedia carriers, with a combination of
“smart” and “dumb” terminal equipment working with a “smart”
network which would control end-to-end services as needed based
on user requirements signalled to the network
 Current telephone networks will develop to support multimedia,
forming the basis of the NGN
 Much service development and provision will come from public
network operators, supported by end-to-end higher-layer services
developed over open interfaces
Geneva 9-10 July 2003
http://www.etsi.org
“Telco” Standards
Issues/Challenges
 Satisfy Network Operators & Service Providers
requirements
 Allow creation of attractive and chargeable services and
ensure end-to-end seamless service provision
 Ensure interoperability between and within the different
policy domains
 Ensure Manageability of networks (optimize OPEX costs)
 Allow phased migration towards NGN (spread CAPEX
costs)
 Satisfy Evolving Regulatory requirements, e.g.
 Lawful Interception, Number Portability, Malicious Call
Trace, Universal Service Provisioning, Interconnection
across networks
 Satisfy Customer requirements, e.g.
 Mobility, including ease of addressing
 Quality of Service
 Security (=trust + availability)
Geneva 9-10 July 2003
http://www.etsi.org
Service Interoperability
Interoperability with Analogue - still call
granny
 Voice over IP needs to inter-operate with PSTN
Inter-working between signalling:
 Two Zones or networks based on different technology
 H.323 and SIP need to be made to inter-work to support
consistent services
 Inter-working between flavours of SIP: 3GPP SIP,
PacketCable SIP, IETF SIP, etc.
Gateways to protect User and Network
 Signalling to Access Gateway is screened from Core
Network
 Policy control at the Access Gateway
 User Access Firewalls / address translation
 Network Firewalls
 Home networking gateways
Geneva 9-10 July 2003
http://www.etsi.org
What has been done Top-down?
Service
Capabilities
Architecture
Encoding and
Mapping Rules
Data,
Semantics
&
Behaviour
Encoding and
Mapping Rules
Meta Protocol
Protocol 1
(e.g. H.323)
Geneva 9-10 July 2003
INTERWORKING
http://www.etsi.org
Protocol 2
(e.g. SIP)
What has been done Bottom-up?
 Media flows: RTP
 Secure end2end Media
 Media Gateway Control: H.248/Megaco, MGCP
 Control of the Media Gateways and Media Coding
 Bearer/Media Control: H.245, RSVP, COPS, H.248/Megaco
 Control of the media bearer and reserving QoS
 Session signalling: SIP, H.323 (H.225.0), BICC, SIP-Tunnelling
 User to User
 Media Gateway Controller to Media Gateway Controller
 User to Media Gateway and Media Gateway to User
 User to Call server or Softswitch and Vice-versa
 QoS Requests in the Signalling e.g. SDP
 Signalling Transport
 Selected and enhanced SCTP
 Policy control, QoS Selection e.g. SDP processing
Geneva 9-10 July 2003
http://www.etsi.org
Much is left to be done …
 Reference (overall and control) Architectures with
 Functional groupings, from where to identify
 Interfaces subject to standardization
 QoS Reservation and Control Protocol Selection
 To ensure end-to-end QoS
 Network, Protocol and Service Security
 To ensure e.g. User/Service/Network integrity
 Resource control: additional H.248 packages
 Session control: well defined SIP-Profiles
 SIP Profiles are being defined in different contexts e.g. 3GPP,
PacketCable, etc..
 The need for several well defined inter-working
specifications, e.g.
 3GPP SIP <-> PSTN, PacketCable SIP <-> 3GPP SIP, etc.
 Session Control <-> Resource Control
 Interworking between carrier and home networks
Geneva 9-10 July 2003
http://www.etsi.org
… for the new TISPAN
Technical Body
Bringing together ETSI-SPAN (Bottom-up) and
TIPHON (Top-down) approaches:
 Focus on business cases and market demand
 “Phased approach” (Phase 1 end of 2005)
 Produce a set of coherent/implementable interface
specifications
 Support a minimum set of Network Capabilities
(future proof multi-service Building blocks)
 Offer true Multimedia services
 Work closely with NGN@Home in ETSI AT
Hence the “Euro-Multiservice
broadband Network” (Euro-MNet
or Euro-NGN)
Geneva 9-10 July 2003
http://www.etsi.org
The NGN@Home viewpoint
Service/
Content
Provider
GPRS / UMTS
BS
BS
IP Core
FWA
AN
FTTH
AN
HFC
DSLAM
xDSL
NGN Services and Content
delivered via one or more
access technologies, with
return path control
mechanisms provided
within the same or
separate access method…
Geneva 9-10 July 2003
Services and Content
distributed via one or
more Home Networking
technologies to
registered devices
within the Home Area
Network (HAN) …
Access Network
SRDs
Residential
GW
PAN
HAN
LAN
Wired
/ PLC
http://www.etsi.org
Wireless
LAN
Home Reference Model
 A Home Area Network:
 May be simultaneously connected to multiple and heterogeneous
delivery networks
 Should ensure access to content independent of the underlying
hardware / transport mechanism
 AV Home Network Architecture
defines the functionality and requirements for creating a local (in-room)
heterogeneous AV network.
 End users can:
 Select the service provider independent of the access mechanism
Different end users within the same HAN can select different service
providers
 Roam between delivery networks, based upon their subscription profile
with the selected service provider
 For example: a user can register with the service provider for
delivery of content when connected via a neighbours’ HAN

Define specific service needs in the following areas :
Quality of Service (QoS)
Security
Privacy
Geneva 9-10 July 2003
Digital Rights Management (DRM)
Copyright … etc.
http://www.etsi.org
NGN@Home
Applications &
Services
Applications
End-End QoS
TR 102 160-7
Call Control
IP
Compatibility of
Analogue/ISDN TE
Impact of
transport layers
on service
delivery
TR 102 160-5
Services
TR 102 160-2 (-1 & -2)
MAC
Access Network
Technologies
PHY
Service
Provider
Residential
Gateway Spec.
TR 102 160-4
DTS/AT-04000x
TR 102 160-3
Access
Network
Residential
GW
Home Area
Network (HAN)
Security & Copyright issues
Geneva 9-10 July 2003
Home Networking
Technologies
http://www.etsi.org
TR 102 160-6