TDMA PON Technologies. TDMA PON Technologies and Implementation

Transcription

1 TDMA PON Technologies and Implementation Tellion, Inc CONTENTS Introduction of TDMA PON TDMA PON Technologies Economical Efficiency Product Roadmap

2 TDMA PON Network Structure >= 10 km Reach (20Km) ONT Residential Fiber : / OSP :, ODN GBE Metro OLT DS: 1490(1550)nm S ONT MTU/MDU Ethernet US: 1310nm S Business Complex Point-Multipoint communication over a single fiber Every ONT/ONU assigned a timeslot(tdm channel) Data encapsulation in MAC-level frame Ranging needed for synchronization Municipal Facilities Introduction of TDMA PON Downstream broadcast Upstream unicast (shared media) Collision Arbitration Allocation resources : TDM (MPCP control) Reporting of congestion MAC Control Allowing only a single ONU to transmit at a time Ranging of discovered devices

3 Principles of TDMA PON MAC Control A unique unicast MAC instance is used at the OLT to communicate with each ONU Only a single MAC service interface and client interface is enabled for transmission at a time Need not receive and transmit packets associated with the same interface at the same time Scheduling algorithm is implementation dependent The MAC Control are given priority over MAC Client frame TDMA PON Technologies ATM-Based PON APON Business model : multi-service, QoS guaranteed, FTTB/FTTC, etc. BPON Business model : multiservice leased line for enterprise GPON Carrier-driven FSAN/ITU-T G.983 G GSR G GPM Business model : FTTH, G GTC FTTB/FTTC IP-Based PON EPON? Vendor-driven IEEE802.3ah

4 TDMA PON Basic Protocol Pros. Cons. A-PON/ B-PON ATM EoATM/IPoATM Maturity of technology Multi-service QoS (ATM QoS) CBR for TDM Relatively higher cost in installation and operation E-PON MPCP Native Ethernet Lower-cost of BW Optimized for scalable data network interface TDMoE for TDM Many Ethernet-QoS issues for real time traffic to be resolved OAMP G-PON GFM BW efficiency over 90% (low overhead) Transparency toward ATM and TDM edge TDM itself for TDM Immaturity of commercial technology and chipset Economical Efficiency of EPON Relative Equipment Cost Relative Cabling Cost Key factor for lower-cost : Optical transceiver + MAC/PHY overhead [Assumption] 1. Equipment cost covers only PON dependent cost, which means the selected variables are optical transceiver, PHY, MAC and relevant addon logic. 2. Number of stages in P2MP is two. 3. Number of subscriber-side ports in 1 st stage SW or PS : one less than 2 nd stage 4. The uplink of 2 nd SW in P2P model is expanded from 100Base-FX to 1000Base-LX when number of ONUs in 2 nd stage becomes four. 5. Fiber in sub-stage is of equal length. 6. The fill rate of PON is 100%.

5 Expenditure Efficiency of EPON OPEX Efficiency High Low USA : PON Japan : 100M E Drop, P2P & P2MP FTTH P2P N-Stage P2P Double Star P2MP N-Stage P2MP Double Star Cable price decreased (20-40% during a few years) Coupler/splitter price decrease -> more 20% reduction in total cost for next three years FTTC/FTTB Active node cost burden Power cost Limitation of copper drop Low High CAPEX Efficiency Split Ratio versus Length EPON link configuration for different length Split Ratio : 20km Reach : 10km Reach OLT deployable upto 3Km from ONT/ONU OLT deployable upto 5Km from ONT/ONU 16 OLT deployable upto 30Km from ONT/ONU Length (km) Power Budget= (Nc*C + Ns*S) + 0.4dB x L + S x M + Splitter L : Distance (Km) M : closure No.

6 Networking Model Networking model provides connectivity for two cases Unicast transmission Multicast transmission The model is based on VLAN identification ISP has full control of destination ONU, and segregation is strictly maintained VLAN <-> LLID management is simple and robust Extend seamlessly to Cisco and Juniper equipment Networking Model Unicast Model VLANs and MAC addresses are the port designator - Ethernet switch uses VLAN to select the PON port - OLT chip converts VLANs to LLIDs Downlink routing is VLAN and DA search based - Agreement must exist between VLAN and DA Multicast Model Two options Single copy VLAN is assigned for multicast service Traffic is using the broadcast channel, and filtered by ONU Multiple copies Router performs packet duplication Inefficient

7 Single LLID Source : Passave Non-standard Was proposed and rejected by IEEE802.3ah Not interoperable Need to register each LLID how to recognize service? Quality of Service Source : Passave Classification Policing Access Control Service Tagging

8 Programmable DBA Utilization Reports System Software DBA Extension OLT Admission Control SLA Configuration Goals of DBA Maximize carrier revenues Sell new and attractive services Simple configuration and maintenance Utilize efficiently the bandwidth Guarantee customer level of service Maximize customer usage experience Enable new and attractive services Guarantee level of service Aristotle TM DBA Plato TM & Socrates TM DBA.... Vendor Extension DBA MPCP & extensions PON OAM Scope OAM(Operations, Administration and Maintenance) Provide data link layer mechanisms for monitoring link Use Slow Protocol Objectives Remote failure indication Remote loopback Link monitoring Non-objectives Management Provisioning and negotiation Authentication Set/write remote MIB OAM Event Type Critical link events Link fault Dying gasp Critical event Link events Link event TLVs

9 EPON Features Link Budget : Downstream 27.5dB, Upstream 29dB Auto discovery DBA Bandwidth service: Minimum guaranteed bandwidth Maximum allowed bandwidth Maximum delay QoSsupport: IP ToSclassification + VLAN/LLID prioritization OAM: Fiber distance, Link Status, Fault Isolation, Remote Status, Remote Loop Back (Link Test) MAC address limiting IEEE802.1x User Authentication Supports up to 256 multi-cast groups IGMP Snooping Product Roadmap FTTC Ethernet/VDSL FTTH Greenfield FTTB Ethernet/TDM FTTH Ubiquitous Time Concentrated Application Focus Expanded Product Line Cost Reduction, Growth

10 Tellion s EPON Products OLT ODN ONT EP3120 OSP EP3208 EP3205PR EP3108/ EP3104 OSP EP3201 EP3204AP Roadmap of Base Chipset (MAC/PHY) Source : Passave

11 ILEC-class OLT 5U 19 Rack Mountable. IEEE 802.3ah compliant ODN interface Up(1310nm)/Down(1490/1550nm), max. 20 PON interface Gigabit Ethernet core network interface max 12 GbE, min 4 GbE Concentration ratio Uplink GbE : PON = 4:20, 8:16, 12:12 Gigabit Ethernet Switch Fabric 24Gb/s throughput Security, Encryption, IEEE 802.1x, Ranging, Flexible DBA BLEC-class OLT PARAMETER Throughput and Switching Capacity Dimension Interface Physical LED CNI ODN Protocol and Service Network Management SPECIFICATIONS Ethernet multi-layer switch securing 24Gbps and 32mpps. Packet flow control supporting 9KB jumbo frame Inter-chassis stacking 19"(W) x 1.5U(H) x 365(D)mm, Rack mountable enclosure Power, Link Fault Indication LED Uplink Status Indication and active data indication LED per each link 1000Base-SX/LX/LH(GBIC): max. 4 ports 8 PONs (4 PONs per module, 2 modules) Split ratio and length : 16 to 32, 10Km to 20Km Tag-based and port-based VLAN, Link aggregation(802.1ad) 802.1p CoS, ToS/Diffserv, 802.3x flow control MAC filtering, IP filtering, DHCP filtering, NetBEUI/NETBIOS filtering MAC address limiting, Rate limiting IGMP snooping, Broadcast storm control Stacking (Intra and Inter-shelf) and Single IP Management Security : 128bits AES SNMP for embedded agent, EMS supporting Java based GUI and CLI Link monitoring, Fault detection and isolation, Remote download, Loopback test

12 ONT Dimension Interface PARAMETER Performance OAM Physical LED ODN Interface UNI Protocol and Service SPECIFICATIONS Link length : 10Lm, 20Km optional Dynamic bandwidth assignment by 64Kbps granularity 160(W)mm x 44.45(H)mm x 180(D)mm Power, Link Fault Indication LED Uplink Status and active data indication LED per UNI port Rx 1490nm, Tx 1310nm, max 20Km 10/100Base-Tx 4-port a/b/g combo supporting max. 54Mbps IEEE802.3ah EFM IEEE802.3, IEEE802.3x, IEEE802.1d MAC address filtering IGMP snooping Tagged VLAN Authentication: 802.1x Authentication, RADIUS Autmatic configuration: DHCP server, client, relay Firewall protection: NAT firewall 128bit AES 64bit WEP key, 128bit WEP key Remote configuration: Telnet, HTTP, TFTP, SNMP Local configuration: RS-232c Optical Splitter 1x16 Optical Splitter Configuration PLC type (70x10x6) Length of pigtail > 2.0 m Fiber-diameter 250 um Characteristics Applicable wavelength ; 1310~1580 nm Max/min IL at room temperature;13~14db Max increase of IL during-40~85 C; 0.2dB Max decrease of IL during -40~85 C; 0.2dB Return loss; > 55.0 db 1x32 Optical Splitter Configuration PLC type (155x92x9.5) Length of pigtail > 2.0 m Tube-diameter 1.1 mm Characteristics Applicable wavelength ; 1310 ~ 1580 nm Max/min IL at room temperature; 15.6 ~ 17.6dB Max increase of IL during-40~85 C;0.28 db Max decrease of IL during -40 ~85 C; 0.23dB Return loss; > 55.0 db Bonding optical splitters in RN Closure (packaging ribbon type splitter to box type splitter) 1:32 Split Ratio W/L 1312nm 1551nm 1*16 Split Test Result Req ~13.64 < ~13.45 <13.7 1*32 Split Test Result Req ~16.98 < ~17.51 <17.6 1:8 Split Ratio

13 Products under Performance Test Value Proposition By Tellion Very high speed and multi-service OAN Heterogeneous traffic control Low CapEx and OpEx Programmable DBA QoS, security and Athentification Robustness in OSP