23 Sept 2009 ECOC 2009 Vienna, Austria

Transcription

1 10G EPON Drivers, Di Challenges, and Solutions Glen Kramer Teknovus, Inc. 1

2 10G-EPON Drivers IPTV Bandwidth/channel is increasing SDTV = 2 Mb/s per channel HDTV = 10 Mb/s per channel 3DTV = Mb/s per channel Number of US households using HDTV (HD-IPTV) is increasing 2010: 40% (20%) 2020: 90% (80%) L. K. Vanston, R. L. Hodges, and J. Savage, "Forecasts for Higher Bandwidth Broadband Services", Technologies Futures, Inc. MSO Market MDU Market The biggest emerging markets are predominantly MDU China, India, Russia, Brazil, etc. With subs per ONU, PON should have 10 capacity Wireless Backhaul MSOs are looking for post- DOCSIS 3.0, all-fiber solutions 2 DOCSIS 3.0 can provide a total of 5 The EPON architecture is a perfect match for the MSO networks, but more bandwidth is needed Desired access point density makes PON the only feasible solution 4G Wireless requires up to 1 per access point PON capacity of 10 is needed

3 Why Next Generation EPON Now? Ethernet t PON opened floodgates for advanced d services Video-on-Demand High-definition IP TV Time-shifted broadcast Online video games Users began to accept, like, and demand more bandwidth-intensive intensive services File sharing, picture uploading, video conferencing More simultaneous IP TV channels More on-demand, less broadcast ( information pull instead of information push ) Successful deployments of 1G-EPON create strong demand for greater bandwidth In , 2006, carriers started looking for a next generation solution Compatible with existing outside plant Compatible with existing NMS and OAM 3

4 10G-EPON Challenges Access represents the most cost-sensitive sensitive segment of the network. Challenge: : Specify a solution that provides the required bandwidth and supports multiple carrier- grade services at the lowest cost. Today, 30 million users are served by EPON. Many of the deployed ONUs will not be replaced for a very long time. Challenge: : Specify a solution that will not rely on forklift upgrades and will not require any changes to the outside plant. 4

5 EPON is a Unifying Architecture IEEE vision: i All user types, All data rates, Same EPON ODN 1 10 MTU ONU per Floor R iser FTTB- MTU Cat-5 / x DSL / EoC MTU ONU in Wiring Closet / Basement Cellular Backhaul Clock Transport IEEE 1588 Business ONU FTTB 1 10 OLT with Traffic Management ONU in Outside Cabinet FTTC / FTTN xdsl FTTB Fiber to the Building FTTC Fiber to the Cabinet FTTH Fiber to the Home FTTN Fiber to the Node HGW Home Gateway MTU Multi-Tenant Unit OLT Optical Line Terminal ONU Optical Network Unit SFU Single-Family Unit STB Set-Top Box Home Networking HGW GE FE / Coax SFU ONU FTTH xdsl STB / IP-STB 5

6 The World is Connected via Ethernet Data is being born and dies as Ethernet (IEEE 802.3) The family of IEEE 802 standards covers multiple functions Transport: 802.3z, 802.3az, 802.3ah, 802.3av, 802.3at, 802.3az, 802.3ba Traffic Engineering, g, QoS p, Q y, Q, Q, Q QoS: 802.1p, 802.1Qay, 802.1Qau, 802.1Qaz, 802.1Qbb Network Config. & Management: 802.1Q, 802.1s, 802.1v, 802.1ad, 802.1ah Survivability: 802.1w, 802.1AB, 802.1ag, 802.1Qaw Authentication and Security: 802.1X, 802.1AE, 802.1af, 802.1AR All 802 standards are governed by a common architectural model and fit together perfectly Matching interface rates Matching data formats 100GE 10GE GE 10GE FE GE 6 PBB Provider Backbone Bridges PBB-TE Provider Backbone Bridges - Traffic Engineering

7 IEEE Process Creates Robust Standard In scope functions are fully specified Nothing left For Future Study Each standard clause has a Protocol Implementation Conformance Statement (PICS) section One solution for one problem, no multiple options Eliminates vendor implementation ambiguity Ensures interoperability and lowers development cost Must demonstrate technical feasibility Close tracking of technology evolution Preference is given to reuse of existing i mature solutions Must demonstrate economic feasibility and broad market potential Constant focus on finding the lowest cost solution The EPON standard is developed for the worldwide market The EPON standard is driven by carriers, system vendors, ASIC vendors, PHY vendors, and optics vendors Broad representation ensures lowest total cost 7

8 EPON Roots EPON architecture is derived from existing specifications using small evolutionary changes 1G P2P Many logic components are common with existing deployed Ethernet devices and can be reused Standardized by CCSA in G EPON 10G P2P 2G EPON 10G EPON For example, 1G-EPON optics required only minimal modifications to point-to to-point optics Relaxed on/off times Relaxed Automatic Gain Control and Clock-Data Recovery times No power level adjustments needed Vendors were able to quickly re purpose inexpensive high volume 1 Ethernet transmitters for EPONs Cost of 1G EPON optics approaches the cost of P2P optics Ethernet volumes drive EPON cost down 8 23 Sept 2009 ECOC 2009 Vienna, Austria

9 EPON Protocol is Simple and Flexible EPON uses Multi-Point Control Protocol (MPCP) No encapsulating framing Same full duplex MAC as in any device Everything is packet based MPCP uses MAC Control frames (type 0x8808) OAM uses Slow Protocol frames (type 0x8809) TDM is implemented using circuit emulation (PWE3) MPCP is designed to be flexible and accommodating of future development >32,000 logical links capable of extended-split and per-flow QoS MPCP does not introduce distance or split limitations Going from 1G to 2G no protocol changes Going from 1G or 2G to 10G only minor changes Added new fields to two control messages to simplify coexistence of various ONUs (rates) on the same EPON Modified some formulas to account for stronger stream-based FEC 9

10 EPON is Easy to Design and Manufacture No segmentation ti and Lower memory reassembly buffers requirements Processing complete packets instead of fragments Data transfer and all protocols are packet-based (OAM, MPCP, TDMoE ) IEEE rule: One solution for one problem Less packet processing Easier queue management Streamlined logic No protocol conversion Few options and implementation methods Low silicon requirements Every single item above may be not critical, but together they make big difference Highly integrated EPON ASICs can be built in smaller package ONU integrated into an SFP module EPON ASICs consume very little power (1G/2G dual-mode ONU SoC ~ 725 mw) Sept 2009 SFP Small Form-factor Pluggable (module) ECOC 2009 Vienna, Austria

11 EPON is Evolving EPON is evolving to simultaneously l support A mix of various user types Low-end users (1/1) Typical users (2/1) High-end users (10/1 or 10/10) 10/10G MDU ONU 10/1G ONU High-end user 2/1G ONU Typical user A mix of various deployment scenarios FTTH FTTC+MDU FTTBusiness Backhaul applications DOCSIS over EPON OLT 1/1G ONU Low-end user 10/10G ONU Business 1/1G SFP ONU Sept 2009 ECOC 2009 Vienna, Austria

12 EPON OLT Supports 4 Types of ONUS EPON OLT built for coexistence can support 4 types of ONUs simultaneously: 1G/1G L2 Switch 1G-1G MAC 1G-1G MAC OLT Layering Diagram 2G-1G MAC 2G-1G MAC 10G-1G MAC 10G-1G MAC 10G-10G MAC 10G-10G MAC 2G/1G 10G/1G RS GMII Tx Rx DG GMII Tx XG GMII Tx Rx 10G/10G PCS 1.25 Tx Channel 1.25 Rx Channel 2.5 Tx Channel Tx Channel Rx Channel PMA PMD Sept 2009 ECOC nm 1310 nm 1550 nm 1577 nm 1280 nm

13 Dual-Rate TDMA Upstream: Combined 10G+1G DBA OLT (Logical View) Colors indicate Wavelength 1577/1270 Xcvr 10/10 ONU A 2.5G DS MAC 1550 Tx 1G DS MAC 1490 Tx 1577 nm 1550 * nm 1577/1310 Xcvr 10/1 ONU B Uplink Switch DBA 10G DS MAC 1577 Tx WDM 1490 nm 1550/1310 Xcvr 2.5 ONU C 1G US MAC 10G US MAC Dual-rate 1310/1270 Rx 1G 1270nm Upstream TDMA 1490/1310 Xcvr 1.25 ONU D Mixed type ONU s on same PON WDM Downstream (Continuous Mode) 10, 1577 nm ONU A ONU B 2, 1550 * nm ONU C * 2.5G λ can use wavelengths other than 1550 nm 1, 1490 nm ONU D Dual-Rate TDMA Upstream (Burst Mode) 1, 1310nm ONU B 10, 1270nm ONU A 1, 1310nm ONU D 1, 1310nm ONU C Sept 2009 ECOC 2009 Vienna, Austria

14 WDM Upstream Separate 10G and 1G DBA Uplink OLT (Logical View) 2.5G DS MAC 1550 Tx DBA 1G DS MAC 1490 Tx Switch 1G US MAC 1310 Rx Colors indicate Wavelength 1577 nm WDM 1550 * nm 1490 nm 1577/1270 Xcvr 1577/1310 Xcvr 1550/1310 Xcvr 10/10 ONU A 10/1 ONU B 2.5 ONU C DBA 10G DS MAC 10G US MAC 1577 Tx 1270 Rx 1310nm 1270nm 1490/1310 Xcvr 1.25 ONU D Mixed type ONU s on same PON 10, 1577 nm 2, 1550 * nm WDM Downstream (Continuous Mode) ONU A ONU B ONU C * 2.5G λ can use wavelengths other than 1550 nm 1, 1490 nm ONU D WDM Upstream (Burst Mode) 1, 1310nm 1, 1310nm 1, 1310nm ONU B ONU D ONU C Sept , 1270nm ONU A ECOC 2009 Vienna, Austria

15 Various upgrade scenarios WDM for 1G and 10G upstream Independent DBA for 1G and for 10G Total upstream bandwidth is 11 (10+1) 10G OLT may be added as a separate line card or as single line card combining 1G and 10G Dual-rate TDMA upstream One OLT port can serve all types of ONUs Provides highest subscriber density Conserves power and saves CO rack space Most important: existing 1G and 2G-EPON investments are protected Either upgrade method allows all existing ONUs to remain in operation Carrier can selectively upgrade subscribers who are willing to pay for premium services and higher data rates 15

16 Organizations Endorsing 10G-EPON Excerpt from joint press release: Piscataway, NJ, September 11, Today, more than 40 companies and organizations that supported or participated in the IEEE P802.3av 10 Ethernet Passive Optical Network (10G-EPON) Task Force are celebrating completion of IEEE Std av TM -2009, also known as Physical Layer Specifications and Management Parameters for 10 Passive Optical Networks. < > The following companies have expressed their support for the approved standard: Alloptic, Anritsu Company, ARRIS, B-DeltaCom, Bright House Networks, Cambridge Industries Group, China Mobile Communications Corporation, China Telecom STTRI, China Unicom Beijing, Corecess, Cortina Systems, CyOptics, Dasan Networks, Dongwon, Enablence Technologies, ETRI, FiberHome, Fujitsu, H3C, Hisense Broadband, Hitachi, Huawei Technologies, Kawasaki Microelectronics, KDDI R&D, KT, Ligent Photonics, Mitsubishi Electric, NEC, NTT Corporation, OF Networks, OneChip Photonics, PMC-Sierra, Shanghai Luster Teraband Photonics Co., Sumitomo Electric, Teknovus, Telekom Malaysia R&D, Ubiquoss, Vitesse Semiconductor, and ZTE. The China Communications Standards Association (CCSA), the Ethernet Alliance, the Optical Access (FTTx) Industry Alliance (OAIA) of China, and the Taiwan Optical Communication Industry Alliance also endorse the 10G-EPON standard. (reviewed and approved by every listed organization) Sept 2009 ECOC 2009 Vienna, Austria