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Accessindependent Core Networks: Converging towards allIP

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BBWF Madrid October 2005. Core Network evolution - steps towards an all-IP target ... BBWF Madrid October 2005. All-IP Evolution Plan requires Industry push ... – PowerPoint PPT presentation

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Title: Accessindependent Core Networks: Converging towards allIP


1
Access-independent Core NetworksConverging
towards all-IP
Andy JonesHead of Transmission
InterconnectivityVodafone GroupBBWF Madrid5th
October 2005
2
Agenda
  • Fixed/Mobile Convergence requires a Core Network
    able to support any type of access
  • Mobile operators perspective on architectural
    convergence
  • Identify the main evolution steps towards an
    all-IP architecture
  • Transport Layer evolution
  • Evolution of Control, Switching and Service
    Layers
  • Role of IP Multimedia Subsystem (IMS) for fixed
    and mobile
  • Compare and contrast fixed and mobile drivers for
    network evolution

3
Where are we? and ...
Where do we want to go?
Servers
Content
Content
Communication Control
Media Gateways
Media Gateways
IP Backbone Network
4
Scope the Reference Core Network Architecture
  • Move from Monolithic to Layered structure for the
    Core Network
  • efficient and specialized platforms
  • modular and scaleable

5
Transport layer Converged Packet Network
IP Backbone Network
  • All services converge on one IP multi-service
    backbone including voice
  • MPLS selected as future-proof convergent
    technology cap ATM investment in Core
  • MPLS first deployed in Vodafone in 2000
  • Early driver - Layer 3 VPN for GPRS
    virtualisation and corporate access
  • Then deployed Layer 2 transport for 3G (3GPP
    Release 99) - ATM over MPLS
  • Collapse of multiple overlayed IP backbones onto
    one network (enterprise SP)
  • Maximise OPEX efficiencies by eliminating
    duplicated transport infrastructures
  • Vodafone Converged Packet Network
  • CPN is a global project within Vodafones global
    business integration programme One Vodafone
  • Already deployed in several major Vodafone
    properties Group-wide rollout in 05/06

6
Transport Architecture Open Hierarchical
  • Vodafone Converged Packet Network Architecture
    (Release 2)
  • De-risking interoperability
  • Simplifying OSS integration
  • Stimulating competition

7
Mobile Core Network - the evolution path
  • 3GPP Release 4 is currently being deployed by
    Mobile Operators
  • Release 4 is a natural evolution of the Core
    Network
  • Modular call servers and media gateways replace
    large monolithic switches
  • Optical/SDH transport layer rationalised
  • TDM tandems removed
  • Overall, a dramatic simplification with
    significant OPEX benefits
  • However, IMS is about to create a disruptive
    revolution
  • Why deploy Release 4 and IMS? Sounds like
    duplicationrather than convergence!
  • Key architectural challenge for Mobile Operators
  • To map an evolution path for the entire
    architecture, optimised both for new and existing
    services

8
Target Architecture for Access-independent Core
Network
  • Looking ahead, the long-term goal is an all-IP
    network architecture
  • All domains are IP-based, end-to-end
  • core
  • access
  • air interface
  • terminal
  • services
  • This all-IP vision requires significant
    architectural development
  • currently in progress in 3GPP Release 7
    standardisation
  • beyond the 3 year planning horizon of R4 and IMS
    introduction

9
Core Network evolution - steps towards an all-IP
target
  • However, R4 and IMS are important steps towards
    the all-IP target
  • Vodafones strategy for R4 is to move rapidly to
    IP transport in the core for voice and video,
    leveraging IP/MPLS Converged Packet Network
  • IMS enables homogenous service framework,
    initially for non-real time multimedia services
    air interface and RAN evolution required before
    CS bearer can be retired
  • R4 and IMS are initially autonomous (R4 for voice
    and videotelephony, IMS for new multimedia
    applications)
  • R4/IMS combinational services link control of
    packet and circuit bearers for real-time
    multimedia
  • 3GPP Release 7 enables efficient use of the UMTS
    packet bearer for real-time traffic
  • Start to see convergence of all mobile services
    on IMS-enabled packet core
  • IMS is the target for Mobile and Fixed operators
    but they have different drivers and priorities
    for its deployment

R4/IMS combinational services rich voice
enhanced with multi-media
R4 deployment
IMS roadmap
2007
2008
2009
2010
2006
2005
3GPP Release 7 standards frozen (for real time
packet bearer in access and core)
Release 7 products general availability
Final step in all-IP evolution IMS-enabled real
time services
Non-real time services on IMS (3GPP Release 5)
10
All-IP Evolution Plan requires Industry push
  • IMS is the common target, but Mobile Fixed
    Operators have
  • different drivers
  • different priorities
  • and therefore, different roadmaps
  • Mobile Fixed operators share a common
    responsibility to drive the industry
  • Vodafone continues to contribute and drive the
    Standards (3GPP, OMA, ETSI etc)
  • Unacceptable lag between standardisation and real
    interoperable solutions
  • In 2004, Vodafone joined the MultiService Forum
    (MSF) www.msforum.org
  • to promote open standards and architecture
  • to accelerate interop for next generation
    infrastructure
  • interoperability agreements for key R4 and IMS
    interfaces
  • Through MSF, Vodafone is accelerating the arrival
    of the all-IP network

11
Thank You!
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