44 - IDNOG03 - LT - Rommy Kuntoro - G.Fast 1Gbps over Copper Cable, Are we ready?
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G.Fast is a new ITU standard that provides gigabit speeds over existing copper telephone lines shorter than 500 meters, a major improvement over existing VDSL technology. It uses frequencies between 2-212 MHz to achieve speeds up to 2 Gbps, using Time Division Duplexing and vectoring to minimize crosstalk interference. Many major network equipment and semiconductor companies are supporting G.Fast's development and production. Initial deployments are expected to focus on multi-dwelling units using fiber to the distribution point and G.Fast for the last few hundred meters of copper to customer premises. While promising high speeds, real-world performance will depend on the quality and type of existing copper wiring used.
44 - IDNOG03 - LT - Rommy Kuntoro - G.Fast 1Gbps over Copper Cable, Are we ready?
- 1. G.Fast 1Gbps over Copper Cable “Are we ready ?” By Rommy Kuntoro
- 2. What is G.Fast ? • Ultra high data rates • Bandwidth: 2-106Mhz - Up to 1Gbps in Amd 1/ 2 on a single pair, double with bonding • Bandwidth: 2-212Mhz - Up to 2Gbps in Amd 3 on a single pair, double with bonding • Using Time Division Duplexing ( TDD ) Technology (not FDD like VDSL) • Provide ratio control Downstream/Upstream bandwidth ( 90/10, 80/20 , 50/50, 70/30 ) • Dynamic Time Slot Allocation (dynamic upstream/downstream) ratio for future • Vectoring is part of the standard • Robust operation – self install friendly • Fast OLR ( online reconfiguration) • Ability to quickly track changes on the line (precoder updates) • Short retrain time • Low power consumption • Discontinuous operation • DRA ( Dynamic Resource Allocation ) G.Fast is ITU Standard (G.9700/G.9701) for local loops shorter than 500m
- 3. The industry is gathering behind G.fast Nokia (ALU) Huawei ZTEAdtran Calix HFR Dasan (Zhone) Altice Labs Zinwell Zyxel Gemtek Pegatron TP-Link T&W & many others Sckipio BRCM Intel (Lantiq) Metanoia Triductor Realtek (Cortina) Hi-Silicon Silicon Equipment Sagem Technicolor QCA (Ikanos) Impressive number of silicon vendors are heavily invested in G.fast
- 4. BT Presentation at G.fast Summit in May
- 5. DSL Spectrum Chart 0 1.1 2.2 8.8 Mhz 12 Mhz 17 Mhz 30 Mhz 106 Mhz 212 Mhz ADSL ADSL 2+ VDSL 8a VDSL 12 VDSL 17 VDSL 30 G.Fast G.Fast amendment 3 (due this fall)
- 6. How VDSL 2+ Coexistence with G.Fast ? 2.2 8.8 Mhz 12 Mhz 17 Mhz 30 Mhz 106 Mhz VDSL 2+ G.Fast 20 Mhz
- 7. G.Fast Implementation . . . 16 Metro E OLT DPU/MDU CPE PON < 2 Km Copper < 500 m FTTdp = Fiber To The distribution point
- 8. G.Fast Challenge Copper CABLE with many kind type and twisted Current Best Practices is CAT 5e Cable with Max 350 - 500 Meters
- 9. G.Fast Devices in My Lab RJ 21G.Fast MDU G.Fast CPE