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Migration to All-IP Networks: Directions and Deployment Presented by: Dr. Yuri Gittik Chief Strategy Officer Customers Event Crete, May 2007.

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Presentation on theme: "Migration to All-IP Networks: Directions and Deployment Presented by: Dr. Yuri Gittik Chief Strategy Officer Customers Event Crete, May 2007."— Presentation transcript:

1 Migration to All-IP Networks: Directions and Deployment Presented by: Dr. Yuri Gittik Chief Strategy Officer Customers Event Crete, May 2007

2 All-IP Crete CE.07 Slide 2 Outline All-IP Networks: The Approach IP Transformation Focus on Access and Metro Incremental Deployment – Leveraging Existing Infrastructures

3 All-IP Crete CE.07 Slide 3 Towards All-IP Networks IP traffic prevails the applications– IP for voice and data services VoIP and soft-switches for voice services Internet access and IP VPN services Pseudowire solutions for Ethernet and legacy Layer 1/2 services New IP-based services: IPTV, N-play Fixed-mobile convergence Access-agnostic services for wireline and mobile customers IMS SIP-based services (push-to-x) IP/MPLS infrastructure IP DSLAMs, PSN backhaul, metro and core networks Its all about money: conomy- not technology! Reduced opex with high economy of scale Reduce the number of different networks and infrastructures Flexibility with existing and new services

4 All-IP Crete CE.07 Slide 4 BTs 21CN Network Evolution From multi-networks to a multi-service network Fewer network elements Simpler service management Rapid implementation

5 All-IP Crete CE.07 Slide 5 Drivers for the 21st Century Network Speed to Market - innovative services Power to Customers – increased flexibility and greater reliability Cost Transformation - significant reduction in operating costs for Investing now for future £1B annual cash savings

6 All-IP Crete CE.07 Slide 6 Migration to All-IP Networks: Still Open Issues IP transformation Maintain legacy traffic (mainly business and mobile) Focus on access and metro From DSLAM to MSAN Ethernet metro Incremental deployment – leveraging existing infrastructures First of all, SDH infrastructure And many others…

7 All-IP Crete CE.07 Slide 7 Outline All-IP Networks: The Approach IP Transformation Focus on Access and Metro Incremental Deployment – Leveraging Existing Infrastructures

8 All-IP Crete CE.07 Slide 8 IP Transformation: Legacy over PSN Maintain legacy traffic over new packet-switched infrastructures TDM, ATM, voice, … A broad traffic range: residential and business services, 2G/3G mobile traffic Domestic and international coverage Network Core Services/CPE Legacy Networks SDH, ATM New Packet-Switched Networks GbE, MPLS, IP Access/Backhaul Legacy Services Existing Equipment 2G BTS 3G NodeB New Services and Equipment IP RAN 4G NodeB ATM DSLAM IP DSLAM

9 All-IP Crete CE.07 Slide 9 "Classic" Edge-to-Edge Pseudowires Emulation of native Layer 1/Layer 2 services, such as TDM, Frame Relay, ATM or Ethernet, over a packet-switched core network (IP/MPLS) Enables transport of a native service over IP/MPLS tunnels Emulation is performed by provider edge devices (PE) The individual service emulations in this approach are termed pseudowires RAD pioneered pre-pseudowire TDMoIP in 1999 and leads the pseudowire standardization and implementation Customer Premises CPE IP/MPLS PE Attachment Circuit Native Service PE Customer Premises CPE Attachment Circuit Native Service PW PW Encapsulation Function

10 All-IP Crete CE.07 Slide 10 Broadening the Pseudowire Approach N/A Network Segment CoreAccess Infrastructure Platforms Ethernet IP/MPLS IAD+DSLAM (MSAN) Classic Pseudowires Note: Metro segment could be considered as a part of the access network, or, alternatively, associated with the core network Extended Pseudowires/Emulation

11 All-IP Crete CE.07 Slide 11 3GPP Development: More IP/MPLS RevisionsControl EntityIub TNLIucs TNL Iups TNL Voice Core Data Core R99 Separate RNCATM ATM/TDMIP/MPLS Rev.4 Separate RNCATM IP IP/MPLS Rev.5 Separate RNCATM or IP IP IP/MPLS Rev.6 Separate RNCIP IP/MPLS Rev.7 Not final Distributed functionality between separate NodeB and RNC IP IP/MPLS LTE: Rev.8+ Not final No separate control nodes IP IP/MPLS RAN Core

12 All-IP Crete CE.07 Slide 12 Mobile Backhauling: Towards IP-centric Infrastructure Milestone 1. Legacy (TDM and ATM-based) cellular voice+data traffic over PSN infrastructure including backhauling Pseudowire solutions with optional clock recovery Incremental migration to all-IP and IMS solutions Mainly in the core, not backhaul infrastructure, yet with some impact on backhauling Milestone 2. IP-based cellular voice+data traffic over PSN infrastructure including backhauling Regular IP solutions with some cellular-specific implementations IMS solutions are expanding into the multi-technology access TISPAN is adding functional sub-system for enhanced control of network resources Grey area

13 All-IP Crete CE.07 Slide 13 Backhaul Evolution Towards IP Evolution steps Pre-provisioned (w/o control plane) traffic-agnostic transport (TDM, ATM) Pre-provisioned (w/o control plane) traffic-aware transport Abis optimization, data compression, … [Traffic-aware] transport with control plane Network control plane (IP/MPLS-based), optionally service-aware Service control plane (IP/IMS-based) Next steps? Access collapsing when controller nodes (not entities!) are eliminated From Backhaul (radio sites-controller)+ Aggregation (controllers-edge node) to Access (radio sites-edge/core node) ? ? ? ?

14 All-IP Crete CE.07 Slide 14 Outline All-IP Networks: The Approach IP Transformation Focus on Access and Metro Incremental Deployment – Leveraging Existing Infrastructures

15 All-IP Crete CE.07 Slide 15 21CN Network Architecture CMSAN – Copper MSAN FMSAN – Fiber MSAN

16 All-IP Crete CE.07 Slide 16 ngDSLAM/MSAN: Typical Deployment Scenario Initial Stage: DSLAM platform with strong focus on residential services (and optional PSTN migration) Use standard commodity IAD and CPE Low importance of fiber access Basic services (voice, Internet access) Next Stage: Broadening the focus More focus on business customers Access over DSL and fiber Maintaining traditional services (leased lines, ATM) Dedicated smart NTU and multiservice CLE for new and traditional services Cellular backhaul applications And now adding IPTV services…

17 All-IP Crete CE.07 Slide 17 To Ensure Really Multiservice MSAN Adding a range of smart NTU/CLE products to the MSAN platform Access over xDSL and fiber links Optional pseudowire technologies to support legacy traffic More focus on direct (fiber) access to Metro Ethernet Point-to-point and point-to-multipoint (GPON) IP/MPLS ngDSLAM MSAN CO/POP Single/multiple Copper Fiber Customer Premises IAD PBX Customer Premises NTU/CLE Single/multiple Copper Fiber Ethernet Metro ATM 3G NodeB 2G BTS TDM Radio Site PBX Access Gateway

18 All-IP Crete CE.07 Slide 18 Ethernet Metro: Too Many Options? Ethernet over legacy networks (SDH, ATM) MPLS-based Ethernet metro New alternative [emerging] technologies Transport MPLS (T-MPLS) – Alcatel, more? PBB-TE (former PBT) – Nortel, BT, NSN, (RAD?) Yet a clear consensus on the requirements for end-to-end Ethernet services Smart termination and service demarcation are essential Ethernet OAM, traffic handling, protection, … E-NTU

19 All-IP Crete CE.07 Slide 19 Outline All-IP Networks: The Approach IP Transformation Focus on Access and Metro Incremental Deployment – Leveraging Existing Infrastructures

20 All-IP Crete CE.07 Slide 20 Leveraging Existing Infrastructure How to take advantage of existing infrastructures? Ethernet/IP services over: SDH: Ethernet over SDH (DTAG, Telenor, …) ATM: Ethernet over ATM (FT, DTAG, …) Network Core Services/CPE Legacy Networks SDH, ATM New Packet-Switched Networks GbE, MPLS, IP Access/Backhaul Legacy Services Existing Equipment 2G BTS 3G NodeB New Services and Equipment IP RAN 4G NodeB ATM DSLAM IP DSLAM

21 All-IP Crete CE.07 Slide 21 T-COM: Bottom Up from SDH

22 All-IP Crete CE.07 Slide 22 Core router Distribution router DSLAM or Ethernet switch ngSDH node Access New build areas FTTP ADSL ADSL2+ SHDSL High capacity DSL areas VDSL2 Core IP/MPLS Distribution Ethernet/ngSDH Areas with late IP/MPLS distribution rollout 80x nodes Distribution Ethernet CWDM SDH Base Station DSL Point-to-point radio or fiber Fiber Telenor: All-IP 2010 Network Higher capacity Fewer technologies Seamless services IP-based service platform with open standards and common interfaces Common service edge Ethernet interfaces All access types

23 All-IP Crete CE.07 Slide 23 Ethernet over SDH: Options Ethernet traffic (services) over pure SDH infrastructure ngSDH, MSPP (Multi-Service Provisioning Platform) Old generation SDH with external Ethernet-over-SDH capabilities GFP, Virtual concatenation for fat pipes, LCAS, etc. Ethernet traffic over combined SDH & PSN infrastructures How to bridge two worlds in a most efficient way? SDH Metro Egate Ethernet IP/MPLS Channelized STM-1 GbE

24 All-IP Crete CE.07 Slide 24 Summary Variety of All-IP networks implementation: One size does not fit all Increasing importance of intelligent multiservice access over diverse media More technological alternatives are under way… driven by economics

25 Yuri Gittik your attention Thank you for


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