Wireline Technologies Dave Russell


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David Russell gave the presentation that explains wireline technology for Blandin’s Broadband conference.

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  • This presentation covers the following topics: The expansion and evolution of Ethernet within the Access network Differences between Enterprise Grade and Carrier Grade Ethernet Jitter and latency – the impact of Ethernet hops and how problems will appear when network scale or bandwidth congestion occurs Expansion and evolution of MPLS within the access network How and where 10 GE will be utilized
  • Wireline Technologies Dave Russell

    1. 1. Wireline Broadband Technologies
    2. 2. Addressing the Bandwidth Challenge <ul><li>External drivers are stimulating demand </li></ul><ul><ul><li>Movement towards more symmetry and less oversubscription </li></ul></ul>
    3. 3. Wireline Technologies <ul><ul><li>Hybrid Fiber Coax </li></ul></ul><ul><ul><ul><li>RF Video </li></ul></ul></ul><ul><ul><ul><li>DOCSIS </li></ul></ul></ul><ul><ul><li>Twisted Pair </li></ul></ul><ul><ul><ul><li>ADSL2+ </li></ul></ul></ul><ul><ul><ul><li>VDSL2 </li></ul></ul></ul><ul><ul><li>Fiber-to-the-Premises </li></ul></ul><ul><ul><ul><li>P2P Ethernet </li></ul></ul></ul><ul><ul><ul><li>BPON---->GPON </li></ul></ul></ul>
    4. 4. Residential Internet Access
    5. 5. HFC Architecture Voice Switch Data Router/ IP Switch Video DFB Laser Optical Node Coax RG6 Headend Home RF MUX RF RF RF RF RF RF RF RF Optical Distribution Node 100 - 2000 Households Passed 4 coaxial branches typical l 4-20 spare fibers “ extra fiber simplifies node splitting” 6kft max Distribution Coaxial Cable P/S
    6. 6. 0 100 200 300 400 500 600 700 800 Frequency [MHz] Return 5 - 42 MHz Analog Forward Digital Forward FM 266 digital channels (8 SDTV per 6Mhz avg.) 77 - 6Mhz analog TV channels (NTSC) Multiple digital and analog carriers of mixed size Basic 550Mhz system Basic 750Mhz system Return for both systems MSO 750 MHz Spectrum
    7. 7. Downstream HFC Capacity Improvement <ul><li>Subdivision of existing optical nodes. “Node split”. </li></ul><ul><li>Stat mux digital channels . “Switched Digital Video” . </li></ul><ul><li>Movement of analog channels to digital. “Spectrum re-use”. </li></ul><ul><li>Increase the upper RF spectrum to 1Ghz. “Spectrum expansion” </li></ul><ul><li>Use RF spectrum above 1Ghz. “Spectrum overlay”. </li></ul>
    8. 8. 0 Hz 5 MHz 10 MHz 15 MHz 20 MHz 25 MHz 30 MHz 35 MHz 40 MHz 42 MHz 45 MHz 90 MHz Status Monitor Set top control Typically not used Cable Modem “ Typical” Cable Telephone “ Typical” Typically not used Typical N.A.Diplex Filter Cutoff Both platforms are generally able to use this space MSO Upstream Spectrum Useable with mid-band split future
    9. 9. Upstream HFC Capacity Improvement <ul><li>Subdivision of existing optical nodes. “Node split”. </li></ul><ul><li>Conversion to all digital. Allocate a portion of former downstream bandwidth to upstream. “Mid-split”. </li></ul><ul><li>Use RF spectrum above 1Ghz. “Spectrum overlay”. </li></ul><ul><li>Use micronode (fiber-to-the-premise, aka Docsis PON or DPON) technology where more bandwidth is needed </li></ul>
    10. 10. DOCSIS Overview <ul><ul><li>Standard adopted by the cable industry in the late 1990’s </li></ul></ul><ul><ul><li>DOCSIS is an IP over ethernet standard </li></ul></ul><ul><ul><ul><li>Layer 3 based architecture </li></ul></ul></ul><ul><ul><ul><li>Broadcom chips in the serving office (Cable Modem Termination System) and the Cable Modem </li></ul></ul></ul><ul><ul><ul><li>Cisco routed core network (Cisco dominates the CMTS business) </li></ul></ul></ul><ul><ul><li>All future CATV IP services run over DOCSIS </li></ul></ul><ul><ul><ul><li>PacketCable-VOIP standard, uses NCS (MGCP) moving to SIP </li></ul></ul></ul><ul><ul><ul><li>PacketCable Multimedia-extends control plane to all multimedia services </li></ul></ul></ul><ul><ul><li>DOCSIS is a global standard </li></ul></ul><ul><ul><ul><li>Certification waves for vendors across the globe </li></ul></ul></ul><ul><ul><ul><li>Testing labs in Europe and Asia </li></ul></ul></ul>
    11. 11. DOCSIS Version Overview [1] Assumes 750MHz of available downstream spectrum (125 channels) [2] Aggregation of four 6MHz channels. With 256QAM = 160 Mbps [3] Assumes ~25MHz of useable upstream spectrum [4] Assumes ~35MHz of useable upstream spectrum [5] Aggregation of 4 6MHz channels Upstream Bandwidth Downstream Bandwidth Consumer Devices Services X X X X X X X X X X X X X X Cable Modem VoIP Phone (MTA) Residential Gateway Video Phone Mobile Devices IP Set-top Box X X X X X X X X X X X X X X X Broadband Internet Tiered Services VoIP Video Conferencing Commercial Services Entertainment Video 120 m i n i m u m [5] 170 [4] 30 170 [4] 10 80 [3] 10 80 [3] Mbps/channel Mbps/node 160 minimum [2] 5 [1] 40 5 [1] 40 5 [1] 40 5 [1] Mbps/channel Gbps/node DOCSIS 3.0 DOCSIS 2.0 DOCSIS 1.1 DOCSIS 1.0 DOCSIS Version
    12. 12. DOCSIS Capacity Roadmap <ul><li>30Mbps (U) </li></ul>DOCSIS 2.0 (symmetric services ) <ul><li>40Mbps (D) </li></ul>DOCSIS 3.0 (channel bonding) Spec Release Service Available <ul><li>160Mbps (D) </li></ul><ul><li>120Mbps (U) </li></ul><ul><li>2002 </li></ul><ul><li>2004 </li></ul><ul><li>2006 </li></ul><ul><li>2008 </li></ul><ul><li>2010 </li></ul>Spec Release Service Available
    13. 13. DOCSIS Downstream Rate Equally Distributed <node @ 192 subs
    14. 14. DOCSIS Upstream Rate Equally Distributed <node @ 192 subs
    15. 15. HFC Capacity Upgrade Comparisons <ul><li>HFC Upgrade: </li></ul><ul><li>Case1: (Switched Digital Video): </li></ul><ul><ul><li>DS: 4Gbps /192 subs ~ 20Mbps even distribution. </li></ul></ul><ul><ul><li>US: 360Mbps /192 subs ~ 1.8Mbps even distribution. </li></ul></ul><ul><li>Case2 (Bandwidth Expansion): </li></ul><ul><ul><li>DS: 5.64Gbps /192 subs ~ 29.3Mbps even distribution. </li></ul></ul><ul><ul><li>US: 360Mbps /192 subs ~ 1.8Mbps even distribution. </li></ul></ul><ul><li>Case3 (Deep Fiber) : </li></ul><ul><ul><li>DS: 4Gbps /192 subs ~ 20Mbps even distribution. </li></ul></ul><ul><ul><li>US: 4Gbps /192 subs ~ 20Mbps even distribution. </li></ul></ul><ul><li>Case 4 (Spectrum Overlay): </li></ul><ul><ul><li>DS: 4.6Gbps /192 subs ~ 23Mbps even distribution. </li></ul></ul><ul><ul><li>US: 2.4Gbps /192 subs ~ 12Mbps even distribution. </li></ul></ul><ul><li>DOCSIS 2.0 (3.0): </li></ul><ul><ul><li>DS: 40 (160Mbps) peak. </li></ul></ul><ul><ul><li>US: 30 (120Mbps) peak </li></ul></ul><ul><li>Conclusion: </li></ul><ul><ul><li>In order for the HFC network to meet or exceed FTTN “Committed” Information Rate capabilities, enhancement via one or more of the several techniques mentioned above will be required. </li></ul></ul><ul><ul><li>In order for the HFC network to meet or exceed the VDSL (FTTN) “Peak” Information Rate capabilities, DOCSIS3.0 Modems and upgraded CMTS will be required. </li></ul></ul><ul><ul><li>In order for the HFC network to exceed the FTTN “Committed + Peak” Bandwidth capabilities both A) and B) would be necessary. However; a) or b) alone could have an interim marketing advantage over FTTN. </li></ul></ul>
    16. 16. Copper and FTTH Technologies
    17. 17. DSL Technologies <ul><li>Residential to Small-Medium Business Services Centric </li></ul><ul><ul><li>ADSL, ADSL S=1/2 </li></ul></ul><ul><ul><ul><li>Considered legacy </li></ul></ul></ul><ul><ul><li>ADSL 2+ </li></ul></ul><ul><ul><ul><li>Today’s mainstream technology </li></ul></ul></ul><ul><ul><ul><li>Bonding emerging as an option for rate-reach expansion </li></ul></ul></ul><ul><ul><li>VDSL2 </li></ul></ul><ul><ul><ul><li>Big in Asia, emerging in North America – optimized for MDU and sub 5 Kft loops </li></ul></ul></ul><ul><li>Business Services Centric </li></ul><ul><ul><li>HDSL 4 </li></ul></ul><ul><ul><ul><li>Today’s mainstream DS1 services technology </li></ul></ul></ul><ul><ul><li>SHDSL </li></ul></ul><ul><ul><ul><li>CLEC centric approach, also used for bonded Ethernet services </li></ul></ul></ul><ul><ul><li>ADSL2+ Annex M </li></ul></ul><ul><ul><ul><li>Symmetric service mode ~ 1 Mbps, higher with bonding </li></ul></ul></ul><ul><ul><li>VDSL2 </li></ul></ul><ul><ul><ul><li>Emerging </li></ul></ul></ul>
    18. 18. Distribution Network Loop Lengths 95% Percentile Distribution Loop Length (1983 Survey) Source: T1E1.4/2003-212, Telcordia Technologies 95% Percentile Distribution Loop Length (1990 Survey)
    19. 19. ADSL2+ Technology <ul><li>Competitive Broadband </li></ul><ul><ul><li>Architectures: </li></ul></ul><ul><ul><ul><li>BBDLC, MSAP </li></ul></ul></ul><ul><ul><li>Technologies: </li></ul></ul><ul><ul><ul><li>ADSL2+ (VDSL2 Long Reach) </li></ul></ul></ul><ul><ul><li>Drivers: </li></ul></ul><ul><ul><ul><li>Brownfields, retrofits, low/medium competition, basic IPTV, competitive HSD </li></ul></ul></ul>Competitive Broadband <15 Mbps Advanced Broadband 20-30 Mbps Ultimate Broadband >30 Mbps 3.5kft 6kft 18kft ADSL2+ Beyond
    20. 20. VDSL2 <ul><li>Advanced Broadband </li></ul><ul><ul><li>Architectures: </li></ul></ul><ul><ul><ul><li>FTTN </li></ul></ul></ul><ul><ul><li>Technologies: </li></ul></ul><ul><ul><ul><li>VDSL2 </li></ul></ul></ul><ul><ul><li>Drivers: </li></ul></ul><ul><ul><ul><li>Brownfields, high competition, advanced IPTV </li></ul></ul></ul>Competitive Broadband <15 Mbps Advanced Broadband 20-30 Mbps Ultimate Broadband >30 Mbps 3.5kft 6kft VDSL2 18kft Beyond
    21. 21. DSL Rate / Reach Graph (downstream) Bandwidth (Mbps) Loop Length (26 AWG) VDSL2 Profile 8d ADSL2+ / ADSL2 VDSL2 / ADSL2+ Cross-over Point
    22. 22. FTTN Deployment Targets <ul><li>Existing copper serving areas </li></ul><ul><ul><li>Reuses high quality copper in urban/suburban areas. </li></ul></ul><ul><ul><li>Remote DSLAM placement at feeder-distribution interface </li></ul></ul><ul><li>Greenfield fill-in </li></ul><ul><ul><li>New homes in areas already served by copper plant. </li></ul></ul><ul><li>MDU’s </li></ul><ul><ul><li>VDSL2 is a natural choice for serving MDU’s. </li></ul></ul><ul><ul><li>To date, most VDSL2 deployments are for MDU’s. </li></ul></ul>
    23. 23. Fiber-to-the-Premises <ul><li>Ultimate Broadband </li></ul><ul><ul><li>Architectures: </li></ul></ul><ul><ul><ul><li>FTTP </li></ul></ul></ul><ul><ul><li>Technologies: </li></ul></ul><ul><ul><ul><li>GPON, P2P </li></ul></ul></ul><ul><ul><li>Drivers: </li></ul></ul><ul><ul><ul><li>Greenfields, overbuilding existing copper plant, high competition areas </li></ul></ul></ul>Competitive Broadband <15 Mbps Advanced Broadband 20-30 Mbps Ultimate Broadband 30-100+ Mbps 3.5kft 6kft GPON 18kft Beyond
    24. 24. FTTP Standards <ul><li>Standards bodies that have specified FTTP protocols </li></ul><ul><ul><li>International Telecommunications Union (ITU-T/FSAN) </li></ul></ul><ul><ul><li>Institute of Electrical & Electronics Engineers (IEEE) </li></ul></ul><ul><li>ITU-T/FSAN </li></ul><ul><ul><li>BPON (G.983) </li></ul></ul><ul><ul><li>GPON (G.984) </li></ul></ul><ul><li>IEEE </li></ul><ul><ul><li>EPON (aka GEPON or 802.3ah P2MP) </li></ul></ul><ul><ul><li>Point-to-Point Ethernet (aka Active Ethernet or 802.3ah pt-to-pt) </li></ul></ul>
    25. 25. North American FTTP Deployments Deployed Technology 87% 4%
    26. 26. P2P Ethernet FTTP <ul><li>P2P is well suited for serving enterprise customers </li></ul><ul><ul><li>Designed to support transport and the dedicated facilities that enterprise customers demand </li></ul></ul><ul><ul><li>Enterprise customers take responsibility for security, on-premises networking, VLAN management, etc. </li></ul></ul><ul><ul><li>P2P is suitable for residential customers beyond the reach of PON </li></ul></ul>Remote Residential P2P Switch Enterprise IP Services IP Video VOIP ISP Video Headend
    27. 27. Gigabit Passive Optical Network (GPON) Businesses Homes MDUs ODN – Optical Distribution Network Voice Switch Internet IP Video RF Video Central Office / Remote Terminal OLT OLT – Optical Line Termination ONT – Optical Network Termination <ul><li>1490 nm </li></ul><ul><li>1310 nm </li></ul><ul><li>1550 nm </li></ul>
    28. 28. Fiber-to-the-Premise Projections
    29. 29. Fiber is the End Game… <ul><li>The question is how fast? </li></ul><ul><li>Conservative </li></ul><ul><ul><li>Primarily green field builds </li></ul></ul><ul><ul><li>Slow overbuild ramp </li></ul></ul><ul><li>Aggressive </li></ul><ul><ul><li>Rapid overbuild from the start </li></ul></ul><ul><ul><ul><li>Accelerated capital investment </li></ul></ul></ul><ul><ul><li>High target for eventual coverage </li></ul></ul>
    30. 30. Flexible Residential Service Delivery BPON or 1.2 or 2.5 Gbps GPON RF Video or Not Personality Module TDM or VOIP 10/100 or Gigabit Ethernet
    31. 31. FTTP Deployments in Minnesota <ul><li>Total FTTP homes in Minnesota (as of 9/30) ~ 18 to 20,000 </li></ul><ul><ul><li>2007 FTTP deployments in Minnesota (through 9/30) </li></ul></ul><ul><ul><ul><li>Homes 5,610 Up 75% year over year </li></ul></ul></ul><ul><ul><ul><li>Percent RF Video 50% Declining over the next few years </li></ul></ul></ul><ul><ul><ul><li>Percent with GE interfaces 17% Likely to exceed 80% in 2008 </li></ul></ul></ul><ul><ul><ul><li>Percent GPON 53% Likely to exceed 80% in 2008 as BPON fades </li></ul></ul></ul>
    32. 32. Minnesota Rate of Adoption of FTTH Over half of Minnesota’s Independent Telephone Companies are now deploying FTTH
    33. 33. Obstacles to FTTH Deployment in MN <ul><ul><li>Most operators in Minnesota deploying FTTH are in low growth areas Independent Telcos have led the way rebuilding their ILEC areas with FTTH and through CLEC activity. Over half in Minnesota now deploying FTTH </li></ul></ul><ul><ul><li>High growth Twin Cities suburbs have recently deployed copper plant; not yet depreciated No Verizon type overbuilding of copper plant, except in greater Minnesota by IOC CLECs and some innovators, such as Hiawatha Broadband and Jaguar </li></ul></ul><ul><ul><li>Most new housing growth in Minnesota is in Qwest territory; Qwest is the only major operator in the U.S. still not deploying FTTH for new residential developments Expect to see more activity in 2008. Committed $300 Million for FTTN deployments over the next two years, probably includes FTTH for some greenfields </li></ul></ul><ul><ul><li>Minnesota has few large master planned communities Large sunbelt states projects can demand FTTH </li></ul></ul><ul><ul><li>Minnesota law restricts HOAs from signing long term exclusive contracts with FTTH service providers; limits FTTP deployments in new developments Sunbelt states benefiting from new FTTH service providers </li></ul></ul>
    34. 34. Residential Technology Summary No 13 Mbps at 5 kft 30 Mbps at 3 kft VDSL2 (copper) Yes 78 Mbps 1 Gbps at subscriber interface GPON (fiber) No 5 Mbps at 12 kft 13 Mbps at 5 kft ADSL2+ (copper) Yes 1 Mbps 160 Mbps DOCSIS 3.0 (HFC) Support for RF Video Average Downstream Bandwidth Peak Downstream Bandwidth
    35. 35. Thank You