DOCSIS 3.1 and its Influence on ?· DOCSIS® 3.1 Development and its Influence on Business 12th Broadband…

Download DOCSIS 3.1 and its Influence on ?· DOCSIS® 3.1 Development and its Influence on Business 12th Broadband…

Post on 10-Jun-2018




0 download


DOCSIS 3.1 Development and its Influence on Business 12th Broadband Technology Conference Sopot, May 2013 Volker Leisse Telecommunications Consultant Who is Cable Europe Labs? Copyright Cable Europe Labs 2013 Cable Europe Labs by the Numbers Copyright Cable Europe Labs 2013 27.7 15,3 12,5 7,1 4,1 3,2 2,9 2,4 1,5 051015202530LGI/UPC KDG Virgin Ono Ziggo Zon Telenet Com Hem YouSeeSource: Cable Europe Labs, Company Reports, Eurostat Europe total (EU27) Population: 503 mill Households: 211 mill Homes Passed: 110 mill Customers: 65 mill Service Subscribers: 76 mill Mission and Goals of Cable Europe Labs Focus on technologies with 18 to 24 month time horizon Span end-to-end network from core infrastructure to home connectivity Cover complete development process Technology assessment Specification and standardization Equipment certification Leverage collective scale to influence cable technology development and to attract attention from important and/or innovative vendors Involve relevant stakeholders to identify important technology trends and to link them to business and commercial requirements of members Strong cooperation with partners such as CableLabs and coordination of related standardization efforts Represent members interests in technology regulation matters together with Cable Europe Copyright Cable Europe Labs 2013 Overview Drivers for change Platform optimization DOCSIS 3.1 technology highlights Network evolution Copyright Cable Europe Labs 2013 Drivers for Change Increased demand on network capacity High speed data services Trendline establishes ~ 50% annual growth in downstream Similar annual growth in upstream Linear broadcasting services Additional TV programs (particularly HD) On-demand services Anytime Growing Video on Demand libraries with improved and graphically intensive user interfaces including search and recommendation engine Network DVR Catch-up services; personalized programming More over IP Anywhere Second and third screens are increasingly IP devices Address individualization in user behavior Copyright Cable Europe Labs 2013 Platform Optimization Residential Services Business Services DOCSIS 3.0 Channel Bonding EPON / GPON / P2P CCAP High-density Headend DOCSIS 3.1 New PHY Distributed Architecture All Fiber EPoC / GPoC Time Copyright Cable Europe Labs 2013 Converged Cable Access Platform - CCAP Router Rcvr CMTS Core Laser NarrowcastBroadcast Upstream Unicast Combiner EQAM Analog Upstream DS Unicast & Narrowcast & Digital Broadcast Services CCAP Analog Todays Headend (modular architecture) Headend with CCAP (integrated routing) Rcvr Laser CMTS + EQAM = CCAP Copyright Cable Europe Labs 2013 Distributed Architecture Approach: move (some) components from the headend closer to the customer (e.g. into the optical node) More efficient usage of DOCSIS capabilities in significantly improved network conditions Avoid active components in coaxial network (node+0 architecture) Enable migration towards digital optics Mini-CMTS/CCAP Fully functional device with smaller form factor and limited performance to be deployed in the field Number and location of devices results in significant concerns about reliability, robustness and management simplicity cost driver Requirements established by network operator; no interoperability issue; no specification issue Remote PHY PHY layer signal processing moved to the field; most or all MAC layer functionality remains in headend Requires new interfaces to enable interoperability (UEPI, Timing Protocol, etc.) Likely to be addressed via CableLabs specification Copyright Cable Europe Labs 2013 DOCSIS 3.1 Project New version of DOCSIS specifications (version 3.1) Development project managed by CableLabs Active participation of cable network operators and equipment manufacturers Key factors for success: vendor contributions and alignment with operator requirements Cable Europe Labs facilitating review of technical proposals by European MSOs and contribution of requirements Copyright Cable Europe Labs 2013 DOCSIS 3.1 Objectives Specification of technologies enabling Efficient support of 10+ Gbps of downstream capacity and 1+ Gbps upstream capacity Significant reduction in cost per bit delivered compared to current DOCSIS technology Adaptation to different amounts of available spectrum and plant conditions Orderly migration strategy Efficient delivery of services to both residential and business customers Improved energy efficiency features such as low power standby and/or sleep modes Copyright Cable Europe Labs 2013 DOCSIS 3.1 Technology Higher Capacity Main mechanisms New error protection algorithms and higher modulation orders Operation across larger bands of spectrum Effects Low Density Parity Check (LDPC) enables higher order modulation even in current networks Increase in spectral efficiency More bits/second/Hz in current plant conditions (e.g. noise, reflections) Same capacity at worse plant conditions (more subscribers can be reached with higher tier services) Simple example 8 bits /symbol with 256QAM 12 bits/symbol with 4096QAM = 50% capacity increase Currently about 50 Mbps per 8 MHz channel (or about 4.7 Gbps per 862 MHz plant) then about 75 Mbps per 8 MHz spectrum (or about 7 Gbps total) Spectrum enhancement ~ 500 MHz of downstream spectrum at 10 bps/Hz (net throughput) for ~ 5 Gbps capacity in DOCSIS 3.1 vs. ~ 780 MHz for 5 Gbps with DOCSIS 3.0 Copyright Cable Europe Labs 2013 DOCSIS 3.1 Technology Robustness, Flexibility, Cost Reduction Main mechanism Orthogonal Frequency Division Multiplex (OFDM) for Upstream and Downstream Effects Transmission of multiple narrow sub-carriers in a frequency block (OFDM channel or OFDM symbol) Each sub-carrier individually adjustable in modulation order and FEC to accommodate Plant conditions (e.g. older network parts) Disturbances (e.g. LTE interference) Spectrum availability (e.g. co-existence with legacy services) Flexible spectrum usage not restricted to 6/8 MHz channels; incremental capacity additions Improved scaling to large bandwidth compared to bonding single carrier QAM channels (SC-QAMs) Mature technology used in many other platforms (notably mobile technologies) Economies-of-scale and larger vendor community Copyright Cable Europe Labs 2013 OFDM DS PHY channel Sub-carrier - 256 QAM Sub-carrier - 256 QAM Sub-carrier - 512 QAM Sub-carrier - 512 QAM Sub-carrier - 1024 QAM Sub-carrier - 4096 QAM Sub-carrier - 4096 QAM Sub-carrier - 1024 QAM DOCSIS 3.1 Technology - Migration Backward compatibility Support of at least 24 bonded SC-QAMs in downstream and 8 in upstream S-CDMA in the upstream DOCSIS 3.1 CMs required to operate on DOCSIS 3.0 CMTSs DOCSIS 3.1 CMTSs required to support DOCSIS 3.0 (and 2.0) CMs To be implemented also with CCAP equipment Operation on existing HFC networks Upstream spectrum remains below downstream Supports operation with existing upstream splits (42/65 MHz as mostly in operation, 85 MHz as specified in DOCSIS 3.0) Supports spectrum enhancement in upstream (e.g. 200 MHz) and downstream (e.g. 1.2 GHz or even 1.7 GHz) Supports the ability to take advantage of enhanced capabilities when network, headend and CPE equipment permit Copyright Cable Europe Labs 2013 DOCSIS 3.1 Use Cases Today Few 1.0/1.1 Lots of 2.0 Some 3.0 CPE Headend5-65 MHz US 3.0 CMTS DS Bonding Soon Remove 1.0/1.1 More 3.0 3.0 CCAP More DS Bonding US Bonding S-CDMA 3.1 CM Many 3.0 First 3.1 3.0 CCAP More DS & US Bonding 3.1 DS CCAP 3.1 CCAP First 3.1 DS OFDM DS Expansion Lots of 3.0 More 3.1 3.1 US CCAP First 3.1 US OFDMA Lots of 3.1 Better HFC US & DS Expansion Reduction of 2.0 Considerations when introducing DOCSIS 3.1 DOCSIS 3.0 CCAP before DOCSIS 3.1 available First DOCSIS 3.1 CM with DOCSIS 3.0 CCAP Introducation of DOCSIS 3.1 DS in CCAP via Firmware Upgrade Introducation of DOCSIS 3.1 US in CCAP via Line Card swap Expansion of frequency range particularly in US very complex DOCSIS 3.0 CM DOCSIS 3.1 CM DOCSIS 3.0 CMTS/CCAP DOCSIS 3.1 CMTS/CCAP (Source: CableLabs, Comcast) Copyright Cable Europe Labs 2013 Towards FTTH ? Service requirements are technology agnostic customers require speed, QoS Technologies not necessarily mutually exclusive but complementary Advantages of DOCSIS 3.1 as a delivery platform Data rates (and supported service tiers) competitive Connectivity available Demand-driven network upgrades (Fiber-to-where-it-makes-sense) Protection of existing investment Marketing challenge: symmetric services Copyright Cable Europe Labs 2013 Converging HFC Platforms Copyright Cable Europe Labs 2013 IP/Transport Network DOCSIS OSS Servers Data Phone Internet HFC Network CM CMTS DOCSIS Network PON Network D-ONU DPoE Network OLT DPoE System PON Network CNU DPoE Network with EPoC OLT DPoE System Coax Network OCU (Source: CableLabs) Summary and Timelines DOCSIS 3.1 enabling Gigabit services Technical highlights New FEC and higher order modulation for improved capacity OFDM for flexible spectrum usage and adaptation to plant conditions enabling cost reductions Backward compatibility (support of 24x8 DOCSIS 3.0 operation at a minimum) Initial benefits (e.g. improved spectral efficiency and flexible spectrum usage) on existing plants without changes Full benefits (e.g. capacity enhancement and spectrum expansion) without additional exchange of equipment Target timelines see completion of specifications in 2013 and initial products as early as 2014 Significant step in evolution of HFC networks remain competitive with alternative access technologies (on cost efficiency and capacity) Capacity enhancements and, consequently, capital investment consistent with customer demand Fiber connectivity to subscribers only where needed and/or economically feasible (e.g. business customers, green field) DOCSIS 3.1 in combination with other technologies (DPoE, EPoC) creates network agnostic IP delivery platform Copyright Cable Europe Labs 2013 Thank you for your attention! Volker Leisse ( with special thanks to Matthew Schmitt and Curtis Knittle (both CableLabs), Mourad Veeneman (Liberty Global) and Jorge Salinger (Comcast) for allowing me to make use of material mailto:volker.leisse@cable-europe.euDOCSIS 3.1 Development and its Influence on BusinessWho is Cable Europe Labs?Cable Europe Labs by the NumbersMission and Goals of Cable Europe LabsOverviewDrivers for ChangePlatform OptimizationConverged Cable Access Platform - CCAPDistributed ArchitectureDOCSIS 3.1 ProjectDOCSIS 3.1 ObjectivesDOCSIS 3.1 Technology Higher CapacityDOCSIS 3.1 Technology Robustness, Flexibility, Cost ReductionDOCSIS 3.1 Technology - MigrationDOCSIS 3.1 Use CasesTowards FTTH ?Converging HFC PlatformsSummary and TimelinesThank you for your attention!


View more >