1 / 50

Integrated Access Solutions - Digital Darkhorses -

Optical Network. ADSL. coax. VDSL. Gigabit Ethernet. Fiber. wireless. SDSL. Integrated Access Solutions - Digital Darkhorses -. Jang-Rai Roh Product Planning www.tellion.com. Definition. Convergence with voice (, video) and data on a common transport

celina
Télécharger la présentation

Integrated Access Solutions - Digital Darkhorses -

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Optical Network ADSL coax VDSL Gigabit Ethernet Fiber wireless SDSL Integrated Access Solutions- Digital Darkhorses - Jang-Rai Roh Product Planning www.tellion.com

  2. Definition Convergence with voice (, video) and data on a common transport from the users’ premises to service providers Higher performance w/lower cost Access Networks Last mile Access barriers POP CO/POP Access Loop Core Network Lower cost w/higher performance First mile Access barriers

  3. I Will Talk About… • A variety of protocols and media… • To reduce the technology risk of the transition from a circuit-oriented to an emerging data centric • Trends/Opportunities in Access Networks • Technical issues • Technical and market trends • Market Migration toward Integrated Access Networks • To support integration of IP, ATM and lambda in economic manner

  4. Issues of Integrated Access • Mismatch of access networks with current requirements • Lack of bandwidth • Lack of installation, use and maintenance • Cost competition of the access networks • To secure economic feasibility • Performance/architectural competition of the access networks • To make optimal for differentiated services • To change into more economic architectures, interfaces, protocols for IP-centric access networks • But, too many candidates being available…

  5. Integrated Access Alternatives • Existing copper • DSL • ATM or packet mode • Hybrid Fiber Coax (HFC) • RF shared, FTTx • FTTx • FTTH/FTTC/FTTB/FTTO/FTTD • TDM, ATM or IP/Ethernet • Wireless • Fixed or mobile • PTP or PTMP • Hybrid wire & wireless

  6. xDSL

  7. xDSL Technologies • ADSL • VDSL • SDSL/SHDSL • Others

  8. Issues in xDSL • CPE auto-configuration, retail availability • Automatic loop qualification • End-to-End flow through provisioing • Interoperability • Voice over DSL • Short-term migration • Long-term migration

  9. OpenDSL • Open, plug-and-play architecture for the automated configuration of DSL CPE • Proxy element function architecture • OpenDSL CPE architecture Proxy Element Function DSL CPE Local Data Share MIB Configuration MIB Instrumentation Instrumentation Default Context MMI Context Modem Context MMI Context DSL CPE EMS SNMP Applications SNMP Applications Proxy Forwarder Command Responder MMI Modification Originator Command Responder MMI Modification Originator SNMP Engine SNMP Engine Transports Transports AAL5 UDP ADSL/SDSL CPE IDSL CPE

  10. VoDSL : Today & Tomorrow • Short-term architecture • Broadband loop emulation service using AAL2 • Architecture • AAL2 enabled CPE • DSLAM providing ATM cell multiplexing • VoDSL gateway • Long-term architecture • Converging data and voice over IP • Architecture • VoDSL gateway would be integrated into the DSLAM • New signaling and control switching used by Media Gateway Control Protocol and MEGACOP/H.248

  11. Issues in xDSL • ADSL Issues • Self-configuration • Installation and maintenance • Performance issues • Warm/fast restart, Quiescent mode • Dynamic rate adaptation, Out of service testing • Revised/expanded bit swapping, Clip scaling • RFI ingress/egress, Concatenated convolutional code • VDSL issues • Line codes, Spectral compatibility • Backward interoperability with ADSL • Positioning

  12. xDSL Standardization • ADSL-Forum • FSAN • ITU-T • ANSI • ETSI • VDSL Coalition • VDSL Alliance • OpenDSL

  13. Convergence Issues • VoDSL • DSL VoB(Voice over Broadband) and VoIP • BLES architecture • AAL2 for voice packetizing fine for today, not for tomorrow • Smart & intelligent DSLAM • Embedded access server • Optical networking • Optical UNI • MPLS based signaling & control • Converging connection-based forwarding techniques & IP routing protocols

  14. HFC

  15. Cable Networks • Infrastructure • CATV, HFC, FTTC, SDV • Transport • QAM, FEC, MPEG-2, QPSK, Ingress • Set Top Box • Analog, Digital • Cable Modems • Telephony, Return Channel • Standards & Projects • DOCSISTM, OpenCableTM, PacketCableTM, ICNA • CableHome Spec. released in 00Q1

  16. Issues in the Cable Networks • QoS: One HFC Network, Multiple Revenue Streams • Converging voice, data and video; VoB • Subscriber management and Billing Requirements for Advanced Cable Services • Contents delivery and intelligent provisioning • Advanced Transport Architectures: Sustaining the Broadband Performance Edge and Access • Fiber-rich and WDM architecture

  17. Cable Transport Networks • Multi-service access for multiple revenue streams • MPLS is: • - An extention of IP • - A media independent replacement for ATM signaling • - A new control plane for non-packet capable devices

  18. Cable Transport Network • Opportunities beyond best-effort data services Point of Convergence TDM ATM POS MPLS

  19. Advanced Transport Architectures • Forward path designs • 1310nm/1550nm distributed feed • 13010nm/1550nm ring • 1550nm with EDFA Amp • 1310nm/1550 nm with 1310nm repeat • Broadcast with CWDM • Return path designs • TDM return path transmitter to return path receiver repeat • TDM utilizing DWDM

  20. Cable Standardization • CableLabs • ANSI/SCTE

  21. OpenCableTM Point Of Deployment POD Module(s) Conditional Access System Internet Content NTSC RF Baseband Audio/Video IEEE 1394 DOCSIS OpenCable Device Video Content Headend Compatible Devices Analog, MPEG-2 QAM64/256 QPSK Other Content Other Headend Other Devices Dolby AC-3 Cable Network 860MHz

  22. PacketCable Zone MTA HFC CMTS CMS Border Proxy MSO Backbone CMTS HFC MTA PacketCableTM • PacketCable 1.0/1.2 Architecture PacketCable Domain PacketCable Domain PacketCable Zone MTA HFC CMTS Border Gateway CMS Border Proxy (DOCSIS) MSO Backbone Border Gateway CMTS HFC MTA MANAGED IP InterProvider NETWORK PacketCable Zone MTA HFC CMTS CMS Border Proxy Border Gateway MSO Backbone Meidia Gateway PSTN CMTS HFC MTA

  23. HFC Alliance • Management and Control Interoperability Alliance • To specify a robust protocol suite to support cost effective interoperability of management systems for evolving HFC networks • SCTE Engineering subcommittees • DSS: Data Standards • CAP: Cable Applications Platform • DVS: Digital Video • HMS: Hybrid Management • IPS: Interface Practices and In-Home Cabling • EAS: Emergency Alert System • NES: National Electrical Safety • CMS: Construction and Maintenance • MMS: Material and Management

  24. Ethernet

  25. Ethernet Issues • Ethernet in the Last Mile • Extends the reach of Ethernet • Local loop up to 1Km or 1.5Km • Shared media to star-wired topology w/full duplex links • Picture of end-to-end Ethernet • Reduces cost • Eliminating protocol conversions • High volume of Ethernet components • Broad knowledge base and labour pool (unit: per Mbps) Cost metrics for IP over various protocols Source: Nortel Networks, Aug. 2000

  26. Ethernet Issues • Ethernet To The Subscribers • Converging data, voice and video(up to HDTV resolutions) over IP • End to end Ethernet L3 SW L3 SW L3 SW Premises Ethernet (10/100BASE) GbE GbE GbE (Ultra)Long-haul Core Metro Core Edge/Access Gateway MAC XGMII We want … unified LAN/WAN PMDs WAN PHY LAN PHY Universal PMD Interface Other PMD CWDM PMD Serial PMD

  27. Ethernet Issues • GigE/10GigE or SONET/SDH ? • Infrastructure issues • A seamless extension of the LAN into the WAN • Cost issues • Cost per port and labor cost saving due to the native protocol of data services for the internet • Revenue issues • Competitive price vs performance • Management issues • Shorter time to provision • Topology issues • Ring, Bus, Mesh • PON

  28. Ethernet Issues • Ethernet WAN standard • Inband management like SONET/SDH • Remote loopback like DSU/CSU • Built in BER management objects • Restoration and protection • Topology agnostic • SP administered VLAN tags • Granular bandwidth for subrate provisioning • Traffic management and classification • Discard eligible for over subscription • Full duplex only • SONET/SDH friendly

  29. Ethernet End Point Functions • CO/POP • WAN connectivity to backbone, Traffic concentration • Offloads, Management interface for access loop • CPE • Manageable edge access, Demarcation point • Traffic grooming and service Provisioning Access Networks First mile Access barriers CO/POP POP Customer Premises Equipments Demarcation point Core Network Access Loop Last mile Access barriers

  30. Upper Layers MAC Control(optional) Media Access Control(MAC) Reconciliation Physical Coding Sublayer(PCS) Physical Coding Sublayer(PCS) Physical Medium Attachment(PMA) Physical Medium Attachment(PMA) Physical Medium Dependent(PMD) Physical Medium Dependent(PMD) Medium Medium 10 Gigabit Ethernet • 802.3 MAC • Packet Length Indication LAN PHY • PCS(8B/10B or SLP) WAN PHY • Frame Encapsulation • Scrambler • SONET-style Framing • SerDes • Optics • Clock recovery • 10GBASE-R(SR, LR, ER) • 10GBASE-W(SW, LW, EW) • 10GBASE-LX • Coding Scheme • - X : LAN(8B/10B) • - R : LAN/WAN(64B/66B) • - W : WAN(SONET Encapsulated) • Medium Type • - Short Wavelength(850nm) • - Long Wavelength(1310nm) • - Extra Long Wavelength(1550nm)

  31. Gigabit Applications • Gigabit Internet To The School/Home • Very Sparse Mode architecture • Wireless internet • MMDS • LMDS www.canet3.net

  32. Gigabit Applications • Gigabit Internet To The School/Home • Sparse Mode architecture www.canet3.net

  33. Gigabit Applications • Gigabit Internet To The School/Home • GITH Dense Mode architecture Hybrid WDM/TDMA Packet-aware PON Pedestal router www.canet3.net

  34. GbE/10GbE Standardization • IEEE802 • IEEE P802.3ae • RPR SG; Resilient packet ring • IETF • IPoPTR; IP over packet transport rings • T1X1.5 Optical Hierarchical Interfaces • T1X1.5/99-038 IEEE802.3 MAC frames to SONET payload • Generic format…carrying Ethernet MAC frames over SONET • OIF • OIF99.138 Generic format…carrying Ethernet MAC frames over SONET(T1X1.5/99-268 )

  35. Optical Access: FTTx

  36. Optical Access Technologies • Small Business and Residential • Ethernet/HPNA/xDSL-based access • Last mile issues • Mid-size Business • Ethernet/xDSL-based access • Last mile & first mile issues • Enterprises and Large Business • 10/100/Gigabit/10G Ethernet-based access • First mile issues: metro access based on Ethernet native LAN interfaces

  37. Issues in Optical Access • Subscriber Loop • PON(TDM, WDM, Packet) • Multi-service access • Access Concentrator + Router (L2/L3) • Metro Access • Optical networking(SDH, WDM) • Optical edge • IP/SDH, IP/WDM, IP/GbE • MPLS enabler

  38. ODN ONT OLT VP VC Tc trail or (T-CONT) Trail* in PON physical layer FSAN/ITU-T Solution The layer architecture in PON • ATM-PON/TDMA • DWDM-PON OLT ONT 1550nm Downstream 15xxnm Receiver 1550nm DFB Laser 1xN Passive Optical Power Splitter Laser . . . TDMA PON 1310nm 1310nm Burstmode Receiver Receiver 1310nm Upstream Laser OLT Downstream ONT 1 1,2,…, 16 Receiver Multi-WL Laser(s) 1xN AWG DWDM PON Laser . . . 17 DWDM Receiver Array 17,18,…, 32 16 Receiver Laser Upstream 32

  39. Ethernet PON • Optical IP/Ethernet for FTTH, FTTC and FTTB networks • Upstream multiple access protocol can be extended 10GbE • Last mile MAC: TDMA or Other(CSMA/CD?) • IP efficiency is good! Optical Network Unit 1 Upstream Multiple Access Protocol CO/POP 2 Routing, Swithcing, Firewall, etc. … 1 4 OLT 2 3 N 3 4 passive splitter . . . F(encryption, management, signaling control, etc.) N

  40. P1 ONT-A P1 P1 P2 P3 P2 ONT-B P2 OLT CO/POP P3 ONT-C P3 A ONT-A A A B C B ONT-B B OLT CO/POP C ONT-C C 1 ONT-A 1 1 2 3 2 ONT-B 2 OLT CO/POP 3 ONT-C 3 PONs : Today & Tomorrow • Line rate: Gigabit • BW mgt : dynamic • WL : CWDM/DWDM • QoS : ATM & IP • Split : > 64 • Distance : > 20Km • APS : Protected/Unprotected • Line rate: 155Mbps • BW mgt : static-> DBA • WL : CWDM • QoS : ATM • Split : 32 • Distance : 20Km • APS : Unprotected CSMA/CD-based Packet-PON • Line rate: nxGigabit • BW mgt : dynamic • WL : DWDM • QoS : ATM & IP • Split : > 64 • Distance : > 20Km • APS : Protected/Unprotected WDMA-based WDM-PON TDMA-based ATN-PON

  41. IP Edge Multi-service Access Adaptation & Encapsulation Optical Access Optical Edge Future Integration with OTNs • Connection-oriented + Connectionless • IP/ATM, IP/PPP/HDLC/SDH, IP/SDL/SDH, IP/WDM • Service convergence • TDM + ATM + IP • Voice migration • Edge to Edge • MPLS, Optical networking

  42. Future Integration with OTNs • Case Study: NGI ONRAMP; A Testbed in Boston area • Access node architecture • “Big fat router” • huge router terminating WDM • Router + O-ADM (SRSO) • smaller router with opticalswitching • Lightpaths carry IP traffic • access node to gateway without intermediate routers Backbone network OpticalLAN Gateway node Access node Feeder network OpticalLAN IP Router IP Distribution networks Optical ADM IP Router IP WDM WDM

  43. Future Integration with OTNs • Opto-Electronics • Short-Haul Multichannel • Optical Channel Management • Digital Wrapper • DPRINGs vs. SPRINGs • ASON • MPL(Label and Lambda)S

  44. Standardization • ITU-T • IETF • ODSI • OIF • FSAN • IEEE

  45. Wireless

  46. Wireless Technologies • Fixed wireless access • MMDS • Operation in 2.1 to 2.7 GHz RF • Data rates up to 10Mbps • Up to 35-mile range • Non LOS requirements • LMDS • Operation in 24 GHz, 28GHz, 31GHz, 38GHz and 40GHz RF • Data rates up to 155Mbps with 2-mile ranges • LOS operation • Multiple access technologies & duplex methods • TDMA/FDD, FDMA/TDD, TDMA/TDD • OFDM, VOFDM • CDMA/FDD

  47. Issues in Wireless Access • Converging data, voice and video • Data over open air interface • QoS control & LOS • Upstream operation • Robust burst-mode demodulation in severe time-varying and/or delay spread environments • Higher spectral efficiency • Downstream operation • High delay spread and time varying environments • Dual antenna capability at lower complexity for interference cancellation

  48. Standardization • OFDM Forum • 11GHz • Fixed Wireless Access, Road Wireless Access, Wireless LAN • Resolving shortage of CDMA • Short-link distance, CoS, Antenna limitations • Wireless DSL Consortium • 2~4GHz BWA (PTMPT) • DOCSIS-based MAC, TDMA/FDD • BWIF (Broadband Wireless Internet Forum) • Vector OFDM • Pros : Burst-mode demodulation, Higher spectral efficiency • Cons :Power amplifier back-off, Phase noise • DOCSIS-based MAC

  49. Wrap-up

  50. Conclusion • It’s time to bring broadband home and wire-speed first mile… • Bandwidth is no longer a scarce resource, just in a view of access technolgy • Problem solving approach for enforcing QoS to customers can be changed • ‘IP-centric provisioning on the optical access networks’ is an emerging success factor… • ATM’s lack of acceptance among the new generation service providers • Standard QoS mechanism for IP will soon emerge…?

More Related