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NGN Drivers: Acces s and core Networks, legacy services migration issues;. Dr. Sathya Rao Telscom Consulting [email protected]. An initiative to develop the NGN Roadmap. The Network Evolution. New Generation Communications. Wireline. Full Services IP Internet. Gateways. Telephone - PowerPoint PPT Presentation
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International Telecommunication Union
Workshop on Next Generation Networks: What, When & How?Geneva, 9-10 July 2003
NGN Drivers: NGN Drivers: AccesAccess ands and core core Networks, Networks, legacy legacy services migration services migration issues;issues;Dr. Sathya Rao
Telscom [email protected]
29-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
An initiative to develop theNGN Roadmap
39-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
The Network Evolution
Gateways
Wireline
Wireless TelephoneSystem
Workstation
Full Services IP Internet
Workstation
Evolving Internet Communications
New Generation Communications
49-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Key Technologies
IP
Access
Core
Services
59-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
NGN CONCEPT
IP backbone
GlobalInternet
DHCP WAP
Operator’sServer Farm
BillingSIP
Proxy Server
ISP Server Farm
VHEAAA
ADSL
SGSNGGSN
GatewayRouter
MobileRouter
WLAN AccessRouter
IP backbone
69-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Broadband (Access) for AllBroadband (Access) for All
Some obvious limitation to overcome: Access Crunch
TheThe”First Km"”First Km"
bottle-bottle-neckneck
Tremendous risein data transmission
capabilities
Tremendous risein data transmission
capabilities
Enormous increase inability to generate andprocess information
Enormous increase inability to generate andprocess information
Fiber OpticsFiber OpticsDoubling every 9 monthsDoubling every 9 months
"Moore's Law""Moore's Law"Doubling every 18 monthsDoubling every 18 months
NetworkNetworkCapacityCapacity
AccessAccessSpeedsSpeeds
ProcessorProcessorPerformancePerformance
Number ofNumber ofTransistors inTransistors inIntel's LatestIntel's Latest
Computer ChipComputer Chip
1
10
100
1.000
10.000
100.000
1980 1985 1990 1995 2000
1
10
100
1.000
10.000
100.000
1.000.000
10.000.000
1980 1985 1990 1995 2000
10.000
100.000
1.000.000
10.000.000
100.000.000
1980 1985 1990 1995 2000
2.4 kbps
19.2 kbps
56 kbps
2 Mbps
155 Mbps
2,400 Mbps
5,500,000
134,000
MbpsMbps kbpskbps
1,200,000
3,100,000
28,000,0001,200,000 Mbps
512 kbps
7,500,000
79-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Global 2005 Broadband Access Market Forecast
Source: the Yankee Group
DSLCableSatelliteFWAOther
44%
39%
3%
2% 12%
BFWA
89-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Broadband AccessBroadband Access TechnologiesTechnologies
100%
2000 2005 2010
POTS + ISDNDSL
Cable(coaxial, HFC)
Optical Fibre
Satellite, FWA
0%
99-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
xDSL Technologies
Name Meaning Data Rate Mode Applications
DSL Digital SubscriberLine
160 Kbps Duplex ISDN Service,Voice and datacomm.
HDSL High data rateDigital SubscriberLine
.544, 2.048 Mbps Duplex T1/E1, LAN access,server access
SDSL Single line DigitalSubscriber Line
1.544, 2.048 Mbps Duple Same as HDSL pluspremises access forsymmetric services
ADSL Assymetric DigitalSubscriber Line
1.5 to 9 Mbps16 to 640 Kbps
DownlinkUpstream
Internet access,VoD, interactivemultimedia
VDSL Very high data rateDigital SubscriberLine
13 to 52 Mbps1.5 to 2.3 Mbps
DownlinkUpstream
Same as ADSL plusHDTV
109-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Ethernet Access Network
o Why Ethernet in the last mile• Network designers can build networks with IP
and Ethernet and avoid the cost and complexity of protocol conversion
• Ethernet supports all services (data, voice and video) and all media types copper & fiber
o Standardisation in IEEE 802.3• Point to multipoint on optical fiber• point to point on optical fiber• point to point on copper
119-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Wireless Access Technologies
Range [m]
Global
1000
100
10Data Rate [Mbps]0.1 1 10 16 100
MobileTelecomunicationNetworks
Wireless Office Networks
Wireless Device Connections
IEEE 802.15.x (PAN)HomeRF 802.11x (WLAN)HiperLANGSMGPRSEDGEUMTS
129-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-TWLAN, a disruptive technology ?
Source : AnalysysUS Market Forecast 2002-2007US Market Forecast 2002-2007
9-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
FixedData
MobileVoice
Mobility with
NetworkConnectivity
(Data + Voice)
Past Paradigms
Present Demand
“3G” WCDMALicensed Bands
WLANUnlicensed Bands
• Personal mobility• High data rate• Incremental infrastructure• Start 1998
• Full mobility• Modest data rate• All new infrastructure• Start 2002
Local Area- On campus- At home
Wide Area- On the road
Future Solutions
Wireless IP Networking Revolution
149-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
The Future Network
IPv6
• Different types of network infrastructures are linked through common protocol
• All communication will be based on packets running on circuit, packet and wireless networks
• There will be convergence at service level to reach any one from anywhere at any time
159-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Broadband Networks & ServicesBroadband Networks & Services
Optical FibreBackboneNetwork
Content Tools
Content Communication
Application
WirelessAccess
WirelineAccess
CableAccess
MediaGateways
Personal Area
Applications & Services
In the HomeOn the Move
169-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Wireless Dream towards reality
o Deployment of WLAN in hot spot areas
• Big ISPs have invested in WLAN • Major vendor communities support: Cisco, Intel, Nokia..
o Wireless IP solutions have lots of momentum!• People desire wireless IP terminals and access devices
o WLAN offers a good mobile solution for indoor IP access
• Added value for the user - Flexibility, user mobility• Added value for ISP - solution for public high IP access
o WLAN standards are converging - IEEE 802.11b and IEEE802.11a
• Interoperability and roaming issues are being seriously worked out
179-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
3G & WLAN integration
3G/GPRSRAN
SGSN
BTS
WLANRAN
WLANAP
Access Router
Gateway"WLAN GGSN"
3G/"HLR"
GGSN
Internet
Multimode terminalwith 3G user identity
Summary of features:- Integrated authentication and billing- WLAN security and mobility with IP terms- AAA work is a must!!!
189-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Optical Transport Network Architecture
199-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
NG Metro/Access Network Structure
BS
BS
BS
PS
VDSL
PassiveSplitter Access NetworkAccess Network
(D)WDM, IP/MPLS
(E)PON
FTTB
DSL
UMTSPico/Micro
Cells
UMTSMacro Cells
• Private customers and SOHOS
• High density housing estates with large dwelling houses
• Private customers and SOHOS
• Low density housing estates with small (single family) houses
FTTC
Point-to-Point Link
Metro NetworkMetro Network
DWDMIP/MPLS, MPS
10/40Gbps/ring / meshed
Global / WANGlobal / WAN10/40Gbps/
meshed
10Gbps/ downstreamup to 2.5 Gbps/ upstream ONT
ONT
BSONT
BSONT
10 Gigabit Ethernet
Public AreaWLAN (IEEE 802.11x) WLAN/UMTS RoamingWLAN/UMTS Roaming
Large business, Large business, EnterprisesEnterprises
CustomerCustomerPremisesPremises
209-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Network Providers require:
- plan-able networks
- networks that are easy to manage
- to offer their resources to as many service providers as possible
- return on investment
- convergence (where realistic) in order to maximise efficiency and minimise costs
The Evolution of the Core and Access Networks
219-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
CPN: Trend towards high speed wireless (over a short distance)
Access: Trend towards GPRS/UMTS (high-speed ?)/ WLAN for “hot-spots”, xDSL, Cable, PON/FTTH/FTTC
Core: Optical (Trend towards higher DWDM)
Trends in Network Evolution
229-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
CPN: The ubiquity of IP applications has driven the biggest change ever seen in telecommunications networks
Access: An encapsulation of the IP packets is generally made in the access network. IP must be modified for wireless usage
Core: Core networks are essentially containers carrying bits. The overhead (time and loss of capacity) for encapsulation is insignificant
Trends in Network Evolution (network layer)
239-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-TProblems of Convergence
- Diversity of user requirements (mobility, high bandwidth, real- time response, security, low cost …)
- Diversity of service requirements. This leads to the fact that certain network topologies and protocols are more efficient than others.
-Diversity of network capabilities
- Market forces and proprietory solutions matching the requirements.
Efficient interoperability is key.Network layer (IP) convergence is the only visible solution
The Evolution of the Core and Access Networks
249-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Strong trend towards the use of IP as the converged network protocol in the home, access network and backbone. A common protocol for conveying the data from the source to the destination brings (in theory) economies in terms of the network devices, management and maintenance.
The Evolution of the Core and Access Networks
259-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Technology Development
Some of the key technologies for NGNs would have to include: - middleware and distributed systems (to enable Service Provider - Network Provider separation)
- IP: IPv6, broadband, QoS, security, mobile and wireless
- multi-domain network management (for seamless roaming and QoS support)
- seamless interworking between core and access networks
- micro and opto-electronics
- cross-media content
- multi-modal and adaptive interfaces
- multi-lingual dialogue mode
- embedded intelligence
269-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T- facilities for (mobile) transitioning between networks owned by different providers mid-session (and the corresponding charging issue)
- QoS may be demanded from the network or, alternatively, accounted for by (adaptive) applications
- QoS parameters have to be agreed between Network Providers
- the same service used on a different terminal, or transmitted over a different access network, will require different QoS values
- QoS on IP has been a research topic for several years. The solution usually proposed in the literature is the use of Intserv in the access network and Diffserv or MPLS in the core. However, the deployment of Intserv is difficult, since existing Internet applications are not QoS aware and do not have signalling capability.
Technology Development
279-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Simplified NGN Architecture
SOFTSWITCH
Transport Layer
Man
ag
emen
t
SS7 ISDN H.323 SIP MGCP
Call Control & MGC
Policy Based Routing
Features &Services
BillingInterface
AAAInterface
Control
QoSController
QoSRouting
PolicyInterpreter
NetworkDB
cNAPScNAPS
RTPForwarding
QoSMeasurement
Virtual ChannelsControl
SLAVerification
MediaGateways
MediaServers
IP End Points
Application Layer Operations & Business Support Systems
MEGACO
DB
SLAManagement
App. ServersInterface
289-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
Multi-Service Softswitch…delivering multiple services using a
Feature Rich Edge
299-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
NGN Features & Benefits
o Features• Multiple applications and media types• Enhanced connectivity, accessibility and
availability
o Benefits• Increase revenue opportunities through
new services and products• Significant Reduction of operational costs
309-10 July 2003 Workshop on Next Generation Networks: What, When & How?
ITU-T
NGN: Conclusions
o The NGN will deliver new ways of communicating that most can’t conceive of today
o The NGN is not about rate arbitrageo IP will rule from network core to the desktopo The value of the NGN grows exponentially in
relation to the number of applications it supportso The NGN is by nature globalo The NGN is the integration of communications
with IT and lifestyleo The transformation of the NGN is already
occurring - don’t miss the boat