Alternative Deployment Options for G.fast using Copper Based Backhaul

Transcription

1 Alternative Deployment Options for G.fast using Copper Based Backhaul TNO UFBB Seminar 2015 Dr. Martin Kuipers 2015 ADTRAN GmbH. All rights reserved. 1

2 FTTdp/FTTB Variants for G.fast G.fast FTTdp Pedestal mounted 1 8 ports Distribution Point Central Office/ Exchange Customer reverse power option G.fast FTTdp Pit mounted Local power option GE, GPON 10GE, 10G PON Street Cabinet Span power option ports Submersible G.fast ONU G.fast FTTdp Pole mounted 8 12 ports 2015 ADTRAN GmbH. All rights reserved. 2

3 Reuse of Copper Saves Cost But, fiber laying is still the biggest CAPEX portion 2015 ADTRAN GmbH. All rights reserved. 3

4 Reuse of Copper for Backhauling Current Access Technology CO CAB VDSL2 CPEs Fiber Speed FTTdP Deployment CO CAB G.fast CPEs Copper Backhaul Deployment Bonded VDSL2 or G.fast CO CAB G.fast CPEs Potential equipment reuse 2015 ADTRAN GmbH. All rights reserved. 4

5 Copper Backhauling Considerations CO Time to market/cash CAB Deployment schedule predictability G.fast CPEs Cost reduction Which technology to be used for backhauling: - Vectored VDSL2 profile 17a or 35b - G.fast with different start frequencies Coexistence with other services on backhauling and access section Bonding technique Latency implications Required backhauling capacity 2015 ADTRAN GmbH. All rights reserved. 5

6 Residential Internet Usage Future Data Growth Rate: 50%? 20% Source: ADTRAN estimates, Busy Hour Load derived from published US Internet traffic statistics 2015 ADTRAN GmbH. All rights reserved. 6

7 Consumption and Broadband Speeds Source: Ofcom analysis of operator data Clear correlation between broadband speed and data use up to 10 Mbit/s. This suggest that below 10 Mbit/s there is a degree of constrained demand. The majority of superfast broadband users appear to be using on average around 100GB per month. Virgin Media users can be identified at the drops in average data use at its various points of package entry, i.e. at 20, 30, 50 and 60 Mbit/s ADTRAN GmbH. All rights reserved. 7

8 Node to Node Variations Source: Sandvine The location of a matters (university campus vs. retirement home) 1.0% of subscribers who make the heaviest use of the network s upstream resources account for 42.0% of total upstream and 14.7% of downstream traffic. Lightest 60.0% of users account for only 10.0% of total traffic ADTRAN GmbH. All rights reserved. 8

9 Required Backhaul Capacity (1/2) Monte Carlo simulations of HSIA and IPTV HSIA - BHOL is modeled as a bounded Pareto distribution - Target downstream performance is 500 Mbit/s which should be achieved in 95% of time - Effective BHOL of a node is scaled to reflect node to node variations (90 th percentile) IPTV - IPTV scenario 2 STBs (4k 19 Mbit/s, HD 7.7 Mbit/s), on average 1.35 STBs are active - Simulation of linear TV, interactive TV, and VOD with a certain probability - Consideration of Multicast, Unicast, Fast CC, mass CC event, etc th percentile of max IPTV traffic is used 2015 ADTRAN GmbH. All rights reserved. 9

10 Required Backhaul Capacity (2/2) 1800 Required backhaul capacity for a 500 Mbit/s service 1600 backhaul capacity [Mbit/s] HSIA 8 Mbit/s BHOL HSIA 5 Mbit/s BHOL HSIA 1 Mbit/s BHOL IPTV 1 Mbit/s + IPTV number of subscribers 2015 ADTRAN GmbH. All rights reserved. 10

11 Required Backhaul Capacity (2/2) 1800 Required backhaul capacity for a 500 Mbit/s service 1600 backhaul capacity [Mbit/s] Mbit/s for 8-16 ports HSIA 1 Mbit/s BHOL IPTV 1 Mbit/s + IPTV number of subscribers 2015 ADTRAN GmbH. All rights reserved. 11

12 Copper Technologies for Access and Backhauling G.fast no VDSL2 coexistence G.fast faster than VDSL2-17a < 325m faster than VDSL2-35b < 250m G.fast compatible with VDSL2-17a & 35b faster than VDSL2-17a < 270m VDSL2-17a DS rate >100Mbit/s VDSL2-35b double DS rate compared to VDSL2-17a same US rate as VDSL2-17a 2015 ADTRAN GmbH. All rights reserved. 12

13 Throughput of Bonded Copper Loops Can coexist with VDSL2-17a and VDSL2-35b Only very short loop lengths up to about 200m Not much better than VDSL2-17a on long loops 0US not increased compared to VDSL2-17a 0Can only coexist with G.fast starting above 40MHz Can coexist with widespread VDSL2-17a Loop lengths restricted to about 300m Widely deployed technology Reuse of HW possible On Long loops rates are close to VDSL2-35b 1 Gbit/s only possible with 8 lines on short loops 2015 ADTRAN GmbH. All rights reserved. 13

14 Compact Residential Area I Current Access Technology CO CAB VDSL CPEs 200m Access Technology VDSL2-17a 200m DS Bitrate 100 Mbit/s FTTdp Deployment CO CAB VDSL2G.fast CPEs 200m 200m Backhaul Technology VDSL2 G.fast G.fast only optical fiber 400 Mbit/s 500 Mbit/s 16 Copper Backhaul Deployment CO CAB VDSL2G.fast CPEs 200m 200m Backhaul Technology Backhaul Capacity Required Capacity VDSL2 G.fast G.fast only 5xVDSL2-17a 650 Mbit/s 650 Mbit/s 300 Mbit/s 300 Mbit/s 7xVDSL2-17a 900 Mbit/s 850 Mbit/s 400 Mbit/s 500 Mbit/s 3xVDSL2-35b 900 Mbit/s 850 Mbit/s 400 Mbit/s 500 Mbit/s 3xG.fast ,000 Mbit/s 850 Mbit/s 400 Mbit/s 500 Mbit/s ADTRAN GmbH. All rights reserved. 14

15 Compact Residential Area II Current Access Technology CO CAB VDSL CPEs 300m Access Technology VDSL2-17a 300m DS Bitrate 100 Mbit/s FTTdp Deployment CO CAB VDSL2G.fast CPEs FTTdp with long G.fast loops (Step 1) 500m 100m 8 16 Backhaul Technology VDSL2 G.fast G.fast only optical fiber 600 Mbit/s 800 Mbit/s CO CAB VDSL2G.fast CPEs m 300m Backhaul Technology VDSL2 G.fast G.fast only optical fiber 150 Mbit/s 300 Mbit/s FTTdp with short G.fast loops and Copper Backhaul (Step 2) CO CAB VDSL2G.fast CPEs 2015 ADTRAN GmbH. All rights reserved. 15 VDSL2G.fast CPEs 300m 200m 100m Backhaul Technology Backhaul Technology Capacity G.fast only optical fiber 2xG.fast Mbit/s 500 Mbit/s 16 16

16 Stretched Out Village Current Access Technology CO ADSL2 CPEs 1,100m Access Technology ADSL2plus DS Bitrate 16 Mbit/s FTTdp Deployment CO CAB ADSL2G.fast CPEs 200m Backhaul Technology VDSL2 G.fast G.fast only optical fiber 400 Mbit/s 500 Mbit/s 8 Copper Backhaul Deployment CO CAB 300m 300m 300m 200m ADSL2G.fast CPEs 8 Backhaul Technology Req. Capacity Technology Req. Capacity Technology Req. Capacity G.fast only 12xVDSL2-17a 1,500 Mbit/s 8xVDSL2-17a 1,050 Mbit/s 6xVDSL2-17a 700 Mbit/s 500 Mbit/s 5xVDSL2-35b 1,350 Mbit/s 4xVDSL2-35b 850 Mbit/s 2xVDSL2-35b 500 Mbit/s 300 Mbit/s 6xVDSL2-35b 1,500 Mbit/s 4xVDSL2-35b 1,050 Mbit/s 3xVDSL2-35b 700 Mbit/s 500 Mbit/s 6xG.fast ,500 Mbit/s 4xG.fast ,050 Mbit/s 3xG.fast Mbit/s 500 Mbit/s 2015 ADTRAN GmbH. All rights reserved. 16

17 Reuse of Existing VDSL2 Service Current Access Technology CO CAB VDSL CPEs 300m Access Technology VDSL2-17a m DS Bitrate 100 Mbit/s Bond existing subscriber lines for backhauling Copper Backhaul using Existing VDSL2 Service CO CAB VDSL2 G.fastCPEs m m Backhaul Technology Backhaul Capacity VDSL2 G.fast 4xVDSL2-17a 400 Mbit/s 270 Mbit/s 6xVDSL2-17a 600 Mbit/s 430 Mbit/s 8xVDSL2-17a 800 Mbit/s 580 Mbit/s 2015 ADTRAN GmbH. All rights reserved. 17

18 Conclusions Fiber laying is still the biggest CAPEX portion in G.fast deployments Copper based backhauling can reduce costs, time to market/cash and provides deployment schedule predictability Required backhauling capacities are moderate for small nodes In many scenarios FTTdp bitrates can also be obtained via copper based backhauling: - Vectored VDSL2 bonding for long distances - G.fast bonding for high bitrates on short loops Bonding technologies and latency implications need to be studied further 2015 ADTRAN GmbH. All rights reserved. 18

19 2015 ADTRAN GmbH. All rights reserved. 19