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Step-by-Step Migration to an All-IP Mobile Backhaul Network

Customers’ Event Crete, May 2007. Step-by-Step Migration to an All-IP Mobile Backhaul Network. Presented by: Issar Krausz Business Development senior Manager. Outline. Backhaul at the Spotlight The Challenge Transport cost reduction Packet-based Transport Pseudowires

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Step-by-Step Migration to an All-IP Mobile Backhaul Network

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  1. Customers’ Event Crete, May 2007 Step-by-Step Migration to an All-IP Mobile Backhaul Network Presented by: Issar Krausz Business Development senior Manager

  2. Outline • Backhaul at the Spotlight • The Challenge • Transport cost reduction • Packet-based Transport • Pseudowires • New Transport Alternatives for Mobile Backhaul • Transport for Fixed and Mobile Convergence

  3. Cellular Backhaul From the Backstage to the Spotlight

  4. It’s All About Customer ExperienceHigher Speed, Richer Content Internet Surfing HSPA Interactive Gaming • 1 Minute of audio from MP3 music file equals: • 132 seconds – GPRS • 22.4 seconds – UMTS • 4.1 seconds - HSDPA Video Conferencing UMTS Video Telephony Video Streaming EDGE Audio Streaming Video Download Audio Download GPRS MMS Internet Rich call services E - mail Content to person SMS Messaging 40 Kb/sec 75 Kb/sec 2 Mb/sec 14 Mb/sec

  5. 6% 12% 39% 33% 2006 2009 82% 28% 1E1 - 2E1 3E1 - 5E1 > 5E1s Source: Heavy Reading, Dec. 2006 The Rapid Bandwidth IncreaseNo. of E1 Links per Cell-site • Worldwide mobile subscriber base keeps increasing • According to Infonetics’ October 2006 report, Mobile Backhaul Equipment, Installed Base, & Services Market Outlook, there were more than 2 billion mobile subscribers worldwide in 2005, and that number will jump to over 3 billion by 2009 • Enhanced user-experience demands higher-speed data rates • Video streaming, MP3/MP4 downloads, MMS, peer-to-peer applications, Mobile TV • NG mobile standards and services are within reach • LTE – 100Mbps

  6. 3G ATM Voice 2-4  E1/T1 HSDPA ATM Data up to 8 E1/T1 Cell-site Transmission Evolution • New services = more transport bandwidth right out of the cell-site • Access becomes the BW bottleneck • PDH/TDM is not a scalable solution • HSDPA – the “killer application” for mobile backhaul Cell Site 2G TDM 1-2  E1/T1 2G BTS Transport Network PDH, SDH, LL 3G Node B

  7. HSDPAThe backhaul “killer application” • Mobile data traffic to double within the next 12-18 months* • Data volumes in backhaul to surge to 3-4 times current levels within 2 years • Mobile data ARPU will not keep the pace * According to Strategic Analysis, Nov. 2006 Source: Unstrung Insider

  8. The ChallengeOptimizing the Cellular Backhaul • Challenge - Handling capacity growth • Backhaul represents 70% of the transport costs • About 30% of the OPEX (incl. site rental, maintenance, technical sup., etc) • Evolution to future ready transmission – All-IP and FMC • Solution – Cost reductions thru • Abis/Ater BW optimization and data compression • Sharing a single transport network by 2G/2.5G and 3G traffic • Statistical Multiplexing with traffic prioritization • Iub optimization adapted to HSDPA sales growth/strategy • Backhauling over alternative technologies and media • Packet-based transport • Using low cost xDSL access

  9. GSM BTS A-bis Optimization E1 E1 Vmux-400 GSM BTS Optimization of A-bis/A-ter Backhaul Links • Reducing backhaul expenses by more than 50% • Reduce no. of E1 trunks for BTS-BSC connectivity with no voice quality degradation • Smallest footprint device in the market – save on co-location costs • A-bis/A-ter traffic optimization for efficient use of backhaul links – leased lines, satellite links and microwave • Data Compression BSC A-bis Optimization TDM/IP Transport Network E1s Vmux-400

  10. n x E1/T1 IMA STM-1/OC-3 GbE Cut Backhaul Costs thru Aggregation GSM BTS • Substantial cost savings by • Aggregation, Grooming, Overbooking/Oversubscription • Aggregation/grooming of GSM and UMTS traffic onto a unified transport • Statistical multiplexing of UMTS/HSDPA traffic based on ATM capabilities • Dynamic bandwidth allocation based on operator’s predefined priorities • Flexible port configuration to support GSM and UMTS N x E1 > n x E1 2G BSC E1/T1s TDM n  E1/T1 TDM Ch-STM1/OC-3 Cell-site Gateway Multi-Service Aggregation SDH/SONET/ATM Transport Network E1/T1s ATM IMA n x E1/T1 (IMA) STM-1/OC-3 STM-1/ OC-3 ACE-3x00 ACE-3x00 3G RNC IP-Node B Ethernet

  11. 2G BTS E1/T1s ATM orSDH/SONET Transport Network Cell-site Gateway 2G TDM 1-2  E1/T1 Optimized approach 6-8 E1/T1 links 3G ATM 2-4  E1/T1 ACE-3x00 (*) Further optional reduction using low-cost packet transport HSDPA up to 8 E1/T1 3G Node B Cell Site Packet Switched Network FE (*) What have we achieved so far? Cell Site 2G TDM 1-2  E1/T1 3G ATM Voice 2-4  E1/T1 2G BTS The traditional approach 8-16 E1/T1 for a full service offering Transport network HSDPA up to 8 E1/T1 3G Node B Savings of over 80 Million Euros/year

  12. What else can be improved? • There are two main alternatives being considered for additional backhaul cost reduction • Using packet-switched transport • Complement by using DSL access

  13. PON • Ethernet is a future proof RAN transport technology • 3G/3.5G/4G, WiMAX and FMC backhaul • Ethernet can be extended to the cell site over various low-cost technologies • Different types of DSL • p2p and p2mp (PON) fiber connections • WiMAX and Ethernet-based radios • HFC Fiber Microwave Ethernet Transport Media Copper HFC Cable EFM xDSL Wireless Mesh Why Packet-based Transport? • Ethernet presents the most scalable and flexible transport solution to meet the BW challenge right off the cell site • The cost for leased lines is about 2.5 times that of new wireline connections (Ethernet, DSL, cable, PON)

  14. Lesson in HistoryWhat are Pseudowires? • Pseudowire is a mechanism that emulates the essential attributes of a telecommunications service over a packet-switched network • TDM leased line, ATM or Frame Relay • It defines a way to packetize and encapsulate data and create a logical link between two network entities • Pseudowire technology is an enabler for circuit emulation and service emulation of legacy services over packet networks PWE3 #1 PWE3 #2 Tunnel CLE/CPE CLE/CPE TDM, ATM FR, etc. Legacy Service Pseudowire Legacy Emulated Service Legacy Service

  15. Pseudowire Standards • RAD is actively involved in most of the standardization bodies

  16. n x E1/T1 IMA STM-1/OC-3 GbE Saving with Packet-based Transport“All-IP Transport” GSM BTS • All-IP unified transport - Future-ready solution • FMC/IMS • Ready for UMTS Rev.6/7 and over • All TDM and ATM legacy traffic is transported over pseudowires • Clock distribution across the packet network • Dedicated ACR (Adaptive Clock Recovery) mechanisms • Meet the ITU-T G.823 sync. requirements and G.8261 mask • Evolution to IEEE-1588 2G BSC n  E1/T1 TDM E1/T1s TDM Cell-site Gateway Multi-Service Aggregation Packet Switched Network E1/T1s ATM IMA FE GbE ACE-3x00 ACE-3x00 3G RNC UMTS Node B ETH IP-Node B

  17. n x E1/T1 IMA STM-1/OC-3 GbE Signaling and Abis traffic 3G real-time traffic (voice and video) 3G HSDPA and non-delay sensitive traffic (data) HSDPA Offload1st Migration Step – The Hybrid Approach GSM BTS • First step of the migration to packet switched network • Separation of transport to carry • GSM/TDMA and UMTS real time voice and video over SDH/SONET or ATM • UMTS HSDPA data traffic mapped to pseudo-wires over PSN • Ensures QoS for voice and real-time traffic ATM or SDH/SONET Access Network 2G BSC E1/T1s TDM n x E1/T1 STM-1/OC-3 n  E1/T1 TDM Cell-site Gateway Multi-Service Aggregation E1/T1s ATM IMA STM-1/OC-3 ACE-3x00 UMTS Node B GbE ACE-3x00 3G RNC ETH Packet Switched Network FE IP-Node B

  18. n x E1/T1 IMA STM-1/OC-3 GbE The Hybrid Solution over a Wholesale Backhaul Service Voice and Real-time over existing infrastructure GSM BTS • Reduce Opex by using E1/T1 links only for the voice traffic • Scalable cost-effective broadband transport service over DSL (wholesale) • HSDPA will serve mainly for Internet access and fast downloads – mobile broadband • Similar to residential DSL services • Two options to be considered • ADSL2+ - applicable for HSDPA (HSUPA may require more UL BW) • VDSL2 - applicable for HSxPA ATM or SDH/SONET Access Network 2G BSC n x E1/T1 STM-1/OC-3 E1/T1s TDM n  E1/T1 TDM Cell-site Gateway Multi-Service Aggregation E1/T1s ATM IMA STM-1/OC-3 ETH ACE-3x00 GbE UMTS Node B ACE-3x00 3G RNC DSLModem ETH Packet Switched Network IP-Node B DSLAM HSDPA over ADSL2+/VDSL2 wholesale

  19. Leverage Copper Using DSL GSM BTS • Leverage existing DSL and DSLAM infrastructure for access to cell sites • Use multiple DSL links (with copper bonding) for higher bandwidth, longer reach and dynamic adaptivity to available DSL links • TDM/ATM/Ethernet-over-PSN PW encapsulation over DSL 2G BSC E1/T1s TDM n  E1/T1 TDM Cell-site DSL Gateway With Bonding Multi-Service Aggregation DSLAM ATM or Packet-switched Transport Network E1/T1s ATM IMA STM-1 GbE xDSL LA-130 UMTS Node B ACE-3x00 3G RNC n x E1/T1 IMA STM-1/OC-3 ETH Multiple SHDSL linksorADSL2+, VDSL2 GbE IP-Node B

  20. Next Step The Hybrid Approach in a DSL/PSN Environment GSM BTS • Mix of DSL technologies in a PSN environment • Differentiate class of service • SHDSL for high quality services • ADSL2+ and VDSL2 for lower class of service • Solving reach and BW challenges • SHDSL for symmetrical traffic with long reach and relative low bandwidth • ADSL2+ for asymmetrical traffic (HSDPA) with mid reach and high download bandwidth • VDSL2 for symmetrical and asymmetrical traffic with low reach and high bandwidth 2G BSC E1/T1s TDM n  E1/T1 TDM DSLAM Cell-site DSL Gateway Multi-Service Aggregation ATM or Packet-switched Transport Network E1/T1s ATM IMA n x SHDSL GbE LA-130 NG ADSL2+ /VDSL2 UMTS Node B ACE-3x00 3G RNC n x E1/T1 IMA STM-1/OC-3 Ethernet GbE IP-Node B

  21. A Glance at the Transport for Fixed-Mobile Convergence

  22. Backhaul over the Fixed and Mobile Converged Transport Residential DSLAM/ CMTS Triple Play ISP GSM BTS • Single packet-switched infrastructure for multiple mobile and wireline services • Aggregation of 2G TDM traffic and 3G ATM traffic onto the Triple/Quadruple Play and business services infrastructure • Tunneling of legacy traffic using standard pseudowire technologies • TDM/CESoPSN and ATMoPSN based on IETF standards 3G RNC ATM E1/T1s TDM Multi-Service Aggregation Cell-site Gateway ETH E1/T1s ATM IMA Packet Switched Network ETH ETH ACE-3100/3200 UMTS Node B ACE-3x00 2G BSC Business ETH TDM IP-Node B

  23. New Trend Leverage the IP DSLAM Infrastructure Residential Triple Play • Further integration for full FMC implementation • Utilize the same infrastructure as the one used for IPTV GSM BTS ISP E1/T1s TDM Cell-site DSL Gateway With Bonding 2G BSC 3G RNC TDM/ATMoPSN Aggregation Device IP DSLAM E1/T1s ATM IMA Packet Switched Network GbE TDM ATM Ethernet xDSL LA-130 UMTS Node B ACE-3400 ETH Business IP-Node B

  24. …and one more to go

  25. TDM Network Voice TrunkingBW savings in the Inter-MSC Links MSC Site Voice Trunking MSC • Significant cost savings • Up to 16:1 voice compression ratio • Excellent voice quality for customers satisfaction • Fast ROI – less than 6 months • Future proof - supports TDM and IP networks for seamless migration to NG transport • Supports all types of signaling • Optimized HDLC/SS7 signaling transport STM-1 E1s MSC Site Gmux-2000 Voice Trunking MSC STM-1 E1s Remote MSC Site Gmux-2000 MSC/BSC Voice Trunking E1s E1s Vmux-2100

  26. MEGACO IP Network MEGACO TDM Network MEGACO NG-MSCSoftswitch NG-MSC NG-MSC VoIP VoIP Migration to IP Backbones MSC Site Voice Trunking and Media Gateway MSC • Leverage the existing backbone segments while introducing NG-MSC switches STM-1 MSC Site Voice Trunking and Media Gateway Gmux-2000 MSC STM-1 Remote MSC Site Gmux-2000 Voice Trunking and Media Gateway MSC/BSC E1s Vmux-2100

  27. …to wrap up

  28. ATM PDH/SDH Migration to All-IP Cellular Network Abis/Ater/A/E Optimization n  E1/T1 TDM IP DSLAM DSL GSM/GPRS BTS 2G/3G Backhaul over xDSL n  E1/T1 CDMA BTS ATM DSLAM TDM/ATM DSL ETH 2G/3G Aggregation n  E1/T1 ATM TDM/ATM PSN Ethernet/IP/MPLS Conversion to PSN LTE/WiMAX ETH n  E1/T1 CDMA 2000 Node B n  E1/T1 HSDPA Traffic Segregation UMTS/HSDPA Node B n  E1/T1 TDM/ATM Clock Distribution over PSN E1/T1 BSC/RNC STM-1/OC-3 TDM/ATM

  29. thank you for your attention Issar Krausz Issar_k@rad.com www.rad.com

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