Cisco dan Hotel Crowne Plaza Beograd, Srbija.

Transcription

1 Cisco dan Hotel Crowne Plaza Beograd, Srbija

2 Novosti iz DOCSIS sveta Bojan Nedelcev Product Sales Specialist, SP Video & Cable Access, South East Europe March, 2016

3 DOCSIS World News

4 Abstract The session describes the key aspects of Converged Cable Access Platform (CCAP), and will describe how Cable operators will migrate multiple silos of technology to a converged architecture whilst maintaining backward compatibility with current DOCSIS and Video deployments. The session will also describe the emerging standard DOCSIS 3.1 and how this plays a pivotal technical development role in the future of an MSO s architecture. A focus on some of the service-driven architectures (SDN) enabled by DOCSIS will also be covered in this session.

5 Agenda DOCSIS 3.1 is finally here. o OFDM and LDCP o Migration Strategies Video Convergence for CCAP architectures o CCAP Overview o Deployment Scenarios New architectures and possibilities for Cable Networks and cable MSO s o Including MHAv2 (Remote PHY) o Software defined networking for CMTS

6 DOCSIS 3.1 The Technology

7 What is DOCSIS 3.1? Goals o o o o Achieve 10+ Gbps in the DS. Achieve 1+ Gbps in the US Backward compatibility story with DOCSIS 3.0, 2.0, & 1.1. Better spectral efficiency. Technology o OFDM, OFDMA, LDPC o New DS and US spectrum o Re-use of D3.0 MAC concepts Toolbox for future expansion - Three steps for Docsis 3.1 o Add OFDM / OFDMA capability o Additional Upstream RF spectrum o Additional Downstream RF spectrum

8 Why DOCSIS 3.1? PON Performance over HFC Technology Poten9al of DOCSIS 3.1 DS Range (MHz) DS QAM Level DOCSIS 3.0 DOCSIS 3.1 Now Phase Phase 2 254* Phase 3 500* Number of DS Channels DS Capacity (bps) #* 200#* 300M 1G 7G* 10G+* US Range (MHz) * 5-400* #* 32#* 60#* 100M 300M 400M* 1G* 2.5G* US QAM Level Number of US Channels US Capacity (bps) * TBD values # Equivalent # of SC-QAMs 10x Peak Bandwidth, 4x Total Bandwidth Achieve 1+Gbps downstreams and 5+Gbps capabili9es to compete with FTTx Further op9mize spectrum u9liza9on to maximize your ROI Increase service revenue opportuni9es such as IP video services and data services for business services

9 OFDM Modulation Orthogonal Frequency Division Multiplexing is a large collection of very narrow QAM subcarriers. Sub-carriers are grouped into an OFDM Blocks which are processed by an FFT. Allows modulation sculpting automatically (each channel can auto modulate to the highest modulation depth allowable by the MER in that frequency from QPSK up to 4096QAM, or beyond) Enables improved RF spectrum efficiency when coupled with improved FEC (LDPC)

10 LDPC FEC FEC = Forward Error Correction FEC adds redundant bits so that errored bits can be re-created. FEC requires an interleaver in order to be truly effective. LDPC = Low Density Parity Check Invented by Robert Gallager in Could not be implemented in HW until recently. More robust than Reed-Solomon.

11 OFDM and LDPC FEC Target Improvements Shannon limit Spectral Efficiency in Bits/Hz 16 QAM OFDM+LDPC 64 QAM OFDM+LDPC 256 QAM OFDM+LDPC 1k QAM OFDM+LDPC 4k QAM OFDM+LDPC Signal to Noise RaHo in db

12 Spectrum Efficiency Single carrier QAM Unused spectrum due to roll-off OFDM channels Smaller guard band No Roll Off Wide OFDM channel No unused spectrum

13 Downstream Profiles The HFC plant has at least an 8 db variation in CNR across the plant. Multiple downstream profiles could enable operators to leverage SNR variation to improve system capacity An example with four profiles: Worst Case Average Case Best Case A: Worst (say mostly 256-QAM) B: Average (say mostly 1K-QAM) C: Better (say mostly 2K-QAM) D: Best (say mostly 4K-QAM)

14 Time Frequency Scheduling Packets are placed into FEC codewords. Each FEC codeword is associated with a profile. Profiles describe the DS modulations that each group of CMs use The target max delay time for any one profile is bounded. f Max Latency 24 to 192 MHz A B C D A B C D A B C D B Data Bursts t

15 OFDM Channels DS Channel Bandwidth o 24 MHz to 192 MHz in size o Example block size is 192 MHz ( 32x6 MHz, 24x8 MHz ) o For example, a 2x1 CM could be 384 MHz DS, 96 MHz US US FFT mode CH bandwidth (MHz) Subcarrier spacing (khz) Max number of subcarriers DS 2K 4K 4K 8K ,

16 Backwards Compatibility DOCSIS 3.1 devices will simultaneously support legacy SC-QAM channels and the new OFDM channels. Devices could support bonding between OFDM and SC-QAM in order to aggregate that bandwidth and provide an incremental and orderly migra9on. The 9me division nature of the exis9ng DOCSIS upstream allows for legacy and OFDM to be 9me mul9plexed. This allows a gradual and evolu9onary introduc9on of DOCSIS 3.1.

17 DOCSIS 3.1 Migration Strategies

18 DOCSIS 3.1 Downstream D3.1 will introduce OFDM with LDPC o Allows higher modulation and higher frequency operation. o The target modulation is 1024 QAM. (4K QAM will be specified) The initial goal is to 1.2 Ghz o This should be possible with new amps but with existing taps. o Long term goal is 1.7 GHz but requires tap upgrades. The D3.1 downstream deployment may occur before D3.1 upstream deployment.

19 Upstream HFC Evolution 150 Mbps > 250 Mbps > Upper Layers Upstream Band Guard Band Legacy OFDMA U/S PHY channel Legacy PHY Bonded Group Legacy MAC U/S 65/86 MHz 3.0 CM 3.0 CM 3.1 CM 3.0 CM 3.1 CM 3.1 CM 3.0 CM 3.1 CM

20 Upstream HFC Evolution 150 Mbps > 250 Mbps > Upper Layers Upstream Band Guard Band OFDMA U/S PHY channel Legacy Bonded Group Bonded Group Legacy PHY U/S Legacy MAC Upstream Upstream spectrum spectrum upgrade upgrade to 204 MHz: to 85 MHz: Move / remap channels 2 29 atmove/remap Aggregate 5 DSdata channels Typical 65 MHz US Plant 64QAM is limited torate Gbps 300 Mbps depending w/ 64QAM on CNR channels at about 150 Mbps 500 Mbps w/ OFDMA 500 Mbps > 1200 Mbps 65/864 MHz With OFDMA the capability could be stretched to ~ 250 Mbps 85/105 MHz 204/258 MHz

21 Downstream Evolution 7 Gbps > OFDM D/S PHY channel 65/86 85/ /258 MHz MHz MHz Legacy Legacy Legacy Bonded Group Legacy Improved bits/hz (OFDM) Broadcast reduc9on Legacy Slightly Modified New Legacy D/S Legacy Analog Reclama9on Node Splits 10+ Gbps Legacy Guard Band 5 Gbps > OFDM D/S PHY channel Future OFDM Future OFDM D/S bands D/S bands Frequency 750MHz Downstream Band 1000MHz

22 CCAP Converged Cable Access R-PHY Remote PHY Interface

23 CCAP Key Points Converged Cable Access Platform Flexible use of QAMs Centralized manipulation to the number of Video based QAMs (VoD, SDV) and DOCSIS (Data) based QAMs Assignment of QAM channels to content specific Service Groups Specific HSD/Voice Service Group, VOD Service Group and SDV Service Group sizes QAM Replication Configure Narrowcast and Broadcast downstreams on a unique basis, where any channel can be shared across ports of the downstream Line Cards Simplification of RF combining to enable all digital services from a single port Provide maximum simplicity for RF wiring in the form of one SG per port, containing all SG QAMs on a single CMTS connector Minimize overall platform complexity. Reduce power and space requirements.

24 What is Remote PHY? Remote PHY is an architectural strategy that removes the PHY element from a product and places that PHY element in a separate access point that is interconnected with an IP network (simple Metro Ethernet networks or EPONs qualify because they use IP packets). Remote PHY allows you to put your main chassis at one end of a network and your PHY chip at the other end of the network. This is a useful technique when the PHY chip needs to be close to an access network, but the desire is to put the intelligence and complexity in a central location that has more room and is more serviceable.

25 Remote PHY Business Goals 1. Interoperability between CCAP-Core and R-PHY Node o Any CCAP-core vendor, any Remote PHY Node vendor o For DOCSIS, MPEG-Video, OOB, and Telemetry 2. Continue to provide value in the CCAP-Core o drive innovation and differentiation in the CCAP-core 3. Standardize the Remote PHY Entity o specify the interface between the CCAP-core and Remote PHY o specify to the level of detail that permits multiple silicon solutions o leverage existing M-CMTS specifications

26 CCAP with Centralized PHY CCAP-Core DOCSIS L2 MAC Video L2 MAC COMMON L1 PHY RF Clock In a I-CCAP, the CMTS and EQAM share a common PHY

27 CCAP with Remote PHY CCAP-Core DOCSIS L2 MAC Video L2 MAC Remote PHY PW Remote PHY Entity Ether net Clock DEPI UEPI R-DTI Ether net Remote PHY PW COMMON L1 PHY RF Clock The CCAP PHY chip is remotely located and connected by a pseudowire DEPI is the downstream pseudowire (PW) UEPI is the upstream pseudowire (based on DEPI) Remote DTI manages transfer of time and frequency

28 Cisco cbr- 8 Docsis 3.1 CMTS

29 Cisco cbr-8 at a glance cbr-8 DOCSIS 3.1 is all about unlocking 5 to 7 9mes more bandwidth to support new service capabili9es and assure compe99veness in a landscape including FTTH operators cbr-8 is the 1st and only plajorm on the market designed ground up for DOCSIS 3.1 Custom-built, 13RU, 10-slot mid-plane chassis I-CMTS CCAP design with integrated N+1 RF Switch Enables full scale 3.0 and 3.1 capacity on every SG, for a total of 64 SGs per chassis (I-CMTS), and 256 SGs per chassis (R-PHY) 8x16 RF, 4x16 RF Linecards, more than 4 Gbps DS capacity per SG 8x10 GE WAN ports; 160+ Gbps forwarding capability Backplane scalable to 1+ Tbps

30 Cisco cbr-8 Chassis Overview Chassis 13RU, 10-slot mid-plane design 8 Universal Subscriber Side slots (HFC, R-Phy, RFoG, etc) Backplane scalable to 2 Tbps RF Line Cards 8 DS ports + 16 US ports per card (8x16) IniHal DOCSIS BW: 768 DS x 64 US (96 US post FCS) IniHal EuroDOCSIS BW: 576 DS x 64 US (96 US post FCS) Slots capable of 120+ Gbps bidirechonal N+1 redundancy with integrated RF Switch Supervisor Cards Integrated QFP, RP Integrated backhaul capacity: 8x10 Gbps 1+1 redundancy Backhaul Cards (OpHonal - Future) Dedicated cards for WAN backhaul if required 1+1 redundancy Power Supplies ~9KW, typical D3.0 load 6 KW (max capacity, facilihes requirement) 4+1 DC modules with 1+1 power rails 3+1/3+3 AC modules Cooling Front-to-back Air intake on card faceplate

31 Cisco cbr-8 Connectivity options RF Line Card PICs MCX connectors N+1 with integrated RF Switch Integrated analog op9cs (future) Remote PHY (future) Supervisor PICs 8x10 GE ports Backhaul Card PICs (OpHonal Future) 10/100 GE ports if required Power Connec9ons 4+1 DC or 3+1/3+3 AC Cooling Exhaust fans 5 Field Replaceable modules Analog Op9cs PIC Card

32 Next Gen Architectures CCAP Migration Strategies

33 ubr10k Docsis 3.0 CMTS Existing Infrastructure 1. Evolution to 1+ Gbps per SG 24 DS per SG / 32 DS per SG o o o o o Supports Class of Service up to 1 Gbps (chassis configuration dependent) 3G60 = 24 Gbps Platform = (8x4 modems) 3G60 w/ 3GSPA = 48 Gpbs Platform = (16x4 and 24x8 modems) 3G60 w/ 6GSPA = 72 Gbps Platform = (32x8 modems) No additional space required update cards only (assumes DS384 deployment) 2. Converged Video o o Modular 3G60 and RFGW10 enable improved capacity and converged video First deployments of converged DOCSIS & Video completed 3. Remote PHY with D3.1 o o o DEPI and UEPI (cornerstones of modular CMTS) enable remote PHY First D3.0 generation product will launch 1H 2014 Full Spectrum D3.1 remote PHY will launch in 2016

34 Leverage Existing Infrastructure Deliver Gigabit Tier Across ubr10k Footprint 1Gb Services over ubr10k with 32 channel modems Broad, cost effective, rapid deployment feasible Converge VOD & Data Reduce rack space, power & cooling

35 Delivering CCAP with cbr-8 Unmatched Density 10x the bandwidth of existing CMTS platforms Reduce hub space & power by up to 50% Ground-up design for DOCSIS 3.1 Scaling to 10Gbps DS & 2Gbps US per Service Group Convergence of all Broadcast and Narrowcast services

36 Path to Virtualizing CCAP Migration to Remote PHY & CCAP Cores Distributes DOCSIS PHY across hubs & nodes Enables reducing CMTS Chassis by up to 75% CMTS is comprised of CMTS Core, PHY and multiple remote PHY 4x the Service Groups of existing CMTS s Reduce power & rack space by over 50% Delivers unprecedented scaling

37 Virtualized CCAP Core (vccap Core) vccap = vccap Cores + distributed Remote PHYs o o vccap Cores: agile, elastic and on-demand Remote PHY nodes scale DOCSIS bandwidth at the fiber node vccap scales subscribers and bandwidth without adding space and power in the hubs CCAP and vccap co-exists

38 Fiber Deep and Roadmap to FTTH Multi Service Metro Network Fiber deep architecture Reduces OpEx and multiplies capacity MetroE and WDM Backbone Superior capacity and cost vs. analog fiber Low cost backbone for all Metro services FTTH (PON) for selected customers Integrated on MetroE/WDM Backbone Blended DOCSIS and PON architecture Highest capacity and low cost Operator paced evolution

39 SDN for Cable Software Defined Networks

40 Business Priorities For The MSOs Business Drivers for implementing SDN for Cable Increase Revenue Deliver more aprac9ve services faster Business services more complex & more demanding Consumers - Make customers lives simpler and richer Business agility & service velocity whilst reducing costs Drive Opera9onal Speed & Efficiency Orchestrate, Automate, Simplify Speed reduce provisioning intervals to hours or days devops for the network Cross-domain management fast and error free for business services and more From managing configura9ons to managing services Stay Ahead of Compe99on Deliver More - with Less Deliver faster internet 9ers every year 10X bandwidth growth over 5 years challenges space, power & TCO Shareholder/management pressure to keep budgets in line

41 Self-Provisioning of Cable Modems Today With Orchestra9on OSS/BSS OSS/BSS Opex Revenue Uplis Customer Experience From $10s to ~$0.001 Faster & simpler path to revenue Customer centered & driven

42 Business Services Provisioning L2VPN Service self-provisioning Today With Orchestra9on OSS/BSS Manual Orchestra9on of different systems Opex Revenue Uplis Customer Experience From $100s to $1s Time to revenue - from weeks to minutes In-control, less wai9ng, fewer errors

43 Rapid Delivery of Customer Services Virtualized Applica9ons

44 SDN Applications for Cable CCAP Analy9cs Dynamic RF Channel Sta9s9cs REST OSGI OpenFlow Dynamic Bonding Group Manager Upstream 2 x 96 MHz channels D C B A L2VPN Manager D3.1 OFDM Profile Manager Cisco SDN Controller (VQAN) Video QoE Analy9cs & Network Op9miza9on f A A B B C B D C A D A B C D A B C D t Example use cases

45 Conclusions The industry is going to evolve A fundamental change is foreseen in how cable architectures are deployed, provisioned and managed The next technology evolution is expected in the next 2 years Docsis 3.1, CCAP, SDN, NFV and Remote PHY will all play a part in some degree in almost every cable operator worldwide There will not be a single common solution, but a tool-box of solutions available to meet all requirements This evolution will enable Cable MSO s to expand into new technologies and solutions not previously thought possible. There is a change coming it is time to prepare!

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