Convergence, evolution and roadmaps Next Generation Networks · 2006. 8. 11. · ITU workshop: Transition towards Next Generation Networks IP Everywhere • The Internet Protocol

ITU workshop: Transition towards Next Generation Networks

Next Generation NetworksConvergence, evolution and roadmaps

Dr. Sathya Rao,Telscom Consulting, [email protected]


NGN Applications Requirement


IP Everywhere

• The Internet Protocol is becoming pervasive– but it was designed over 20 years ago

• More and more devices are using IP– and they require reachability– places a demand on IP address space– 1 billion IP devices by 2003– requires IP routing to be scalable

• IP is a convergence protocol for the evolution of next generation networks


Internet - the way forward

• Internet today– Millions of users– Web, email, low-quality audio & video– Applications adapt to underlying technology

• Next Generation Network of tomorrow– Billions of users and devices– Convergence of applications and services– New technologies lead to novel applications– Building a real information society with ‘Always-

on Network’– Global village a reality


Internet Growth

• Current estimates– 300M users online worldwide, US/Europe-centric– 70M hosts connected with global IP addresses

• Most of these are with fixed network

• Growth of Mobile internet– WAP, GPRS, EDGE, UMTS,.. With data services

• Limitations of IPv4 – with 32-bit addressing allows 4B hosts– but allocation has been done inefficiently– some institutions own a Class A address space– CIDR and NAT have only patched the problems


Networked Society

IP

• 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


Fixed vs. mobile access

0

200

400

600

800

1000

1200

1400

1600

1800

1995 2000 2005 2010

Subscriptions worldwide (millions)

Source: UMTS

Mobile Multimedia

BasicMobileFixed Telecom subscribers

Fixed Internet subscribers

2000


Mobile Internet will be always-on

19991999 20002000 2002200220012001

Sess

ions

/ M

onth

/ G

SM s

ub(le

adin

g m

arke

ts)

Usage

Mobile WWW (WAP)Mobile WWW (WAP)

Fixed WWWFixed WWW

WAPGPRS

IPv6


NGN Requirements-IPv6

• Requirements– Scalability of networks with address space,QoS and

security, which are basic features of IPv6 networks– Connectivity with existing IPv4 networks is necessary– IPv6 should happen from the edges, not from the core.– Applications are important for pushing IPv6

• it has to be transparent to the end user– Interoperability with IPv4 has a cost

• 100% interoperability is not always necessary– We need a credible transition story.


3GPP standards status

• Issues addressed in 3GPP Rel 5 type network i.e. fast radio via UTRAN, separation of PS and IM domains and addresses:– IP address allocation– Header compression with security– Interworking with IPv4 network– SIP VoIP (and possible multimedia)– QoS– DNS– Interworking of PS and IM domains– Roaming– Time to setup GTP tunnels– Etc


Moving towards IPv6...

Moving towards IPv6 is both a near-term and a long -term concern of network dependent businesses

• equipment manufacturersequipment manufacturersequipment manufacturersequipment manufacturers• network ownersnetwork ownersnetwork ownersnetwork owners• service providersservice providersservice providersservice providers

and public authorities, such as the EC.

For Europe, it is at the same time a challenge and an opportunity


Related projects

• 6INIT: IPv6 network intiative• 6WINIT: Wireless IPv6 initiative• MobyDick: Fixed mobile network

trials• WINE: Wireless internet• NGN Initiative• GEANT: Pan European academic

network• OPTIMIST


Technologies and Services Convergence


R/Evolution vs. User demand


Networking Technologies


IP,ATM, Optical Technologies

Access Core


Evolution of Transmission Technology

– 1st Generation: Copper is transmission medium

– 2nd Generation: Optical Fiber (late 80s) • Higher data rates; longer link lengths

– Dense Wavelength-Division Multiplexing (DWDM, 1994)

• Fiber exhaust forces DWDM• Erbium-doped fiber amplifiers (EDFAs) lower

DWDM transmission cost– 3rd Generation: Intelligent optical networking

(1999)• Routing and signaling for optical paths


Dense Wavelength-Division Multiplexing (DWDM)

---

1

2

3

N

---


DWDM Evolution

– Faster (higher speed per wave), • 40 Gb/s on the horizon

– Thicker (more waves), • 160 waves possible today

– Longer (link lengths before regeneration) • A few thousand km possible today

– 160 waves at 10 Gb/s = 1.6 Tb/s• 25 million simultaneous phone calls• 5 million books per minute


Optical Pass-Through (Routing)

IP/ATM/SDH

Node A Node B Node C Node A Node B Node C

No optical pass-through With optical pass-through

IP/ATM/SDH

IP/ATM/SDH

IP/ATM/SDH

IP/ATM/SDH

IP/ATM/SDH


Intelligent Optical Networking

• Optics is not merely a transmission technology– Optics provides a flexible layer upon which to

deliver network service• DWDM provides enormous link capacities

– DWDM: Physical layer of Intelligent Optical Network

• Routing and signaling of optical paths– Provides significant economies over

conventional network architectures– Enables revolutionary new services

• 2.5 Gb/s path from anywhere to anywhere, on demand!


Next Generation Networks International Initiatives


IETF: IP Next Generation• Main issue: transition from IPv4 to IPv6 technology

– Expanded Routing and Addressing Capabilities– Header Format Simplification – Improved Support for Options– Quality-of-Service Capabilities– Authentication and Privacy Capabilities– Autoconfiguration– Multihoming– http://www.ietf.org

• IPv6 Forum (http://www.IPv6forum.com)– Associated to IETF, founded in Europe to promote

IPv6 among industry partners for smooth transition


3GPP: Third Generation Partnership Project

• 3GPP will provide globally applicable Technical Specifications for a 3rd Generation Mobile System based on the evolved GSM core network, and the Universal Terrestrial Radio Access (UTRA), to be transposed by relevant standardization bodies (Organizational Partners) into appropriate deliverables (e.g., standards).

• UMTS Forum and 3GPP are working together for the successful introduction and development of UMTS/IMT-2000 ’’third generation’’ mobile communications systems.

• www.3gpp.org


Internet 2• Develop and deploy advanced network applications

and technologies, accelerating the creation of tomorrow’s Internet– Enable new generation of applications– Re-create leading edge R&E network capability– Transfer technology and experience to the

global production Internet• Focus Areas

– Advanced Applications– Middleware– Advanced Network Infrastructure– New Network Capabilities– Partnerships


IPv6 testing backbone network


CANARIE Inc: Canadian Initiative

MISSION• To facilitate the development of Canada’s

communications infrastructure and stimulate next generation products, applications and services

• Canadian equivalent to Internet 2 and NGI• private-sector led, not-for-profit consortium• consortium formed 1993• federal funding of $300m (1993-99)• total project costs estimated over $600 M• currently over 140 members; 21 Board members


European Initiatives

• DANTE: pan-European network to interconnect the European National Research Networks: SURFNET (NL), JANET (UK), WIN (G), SWITCH (CH), RENATER (F)…

• DANTE's European dimension– TEN-155 Network (Quantum)– Q-MED: TEN-155 network interconnection with

national research networks of Israel and Cyprus– GEANT (follow-up of TEN-155 towards multi

Gigabit core network interconnecting national research networks)


TEN-155/GEANT Network


European experiments: Telia Example

Telephony, VoD, IP-VPN Audio/video, broadcast, e-commerce

WWW, File transfer, Games,On-line shopping,

E-mail, etcServices +Businesses

Optical network (DWDM)PSTN/ISDN, MPLS, IP-net, etc

ServicesNetworks

IP basedbroadband access

Transport and service networkindependent communicationprotocol

IP


Telia Experiment

The IP-Plug is the next generation

communications-plug for both Ring

and Web-tone

10 10 10 10 ----> 100 > 100 > 100 > 100 ----> 1000 > 1000 > 1000 > 1000 ----> ……. Mbit/s> ……. Mbit/s> ……. Mbit/s> ……. Mbit/s

EthernetEthernetCustomer equipment/Home LAN


Next Generation Network Initiative

• A European IST project to promote the converging next generation networking technologies– A group of IST projects representatives would work

towards an international co-operative work through developing roadmaps, benchmark reports and well established links to international research groups.

• Will establish different focus topical groups• Will manage a central secretariat• Will provide links to research projects• promotes the contribution to standards groups


Conclusions• NGN initiative launched to study innovative NGN

R/Evolution• Networks will have variety of access and core

networks to serve the society• Interworking and interoperability would be major

issues• NGN (IPv6, 3G and WDM) would be widely deployed

to provide broadband, high quality and secure services

• New communication software will drive the evolution with differentiated value added services

• Standards play a key role in NGN vision

Documents

Convergence, evolution and roadmaps Next Generation Networks · 2006. 8. 11. · ITU workshop: Transition towards Next Generation Networks IP Everywhere • The Internet Protocol