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WP1 Technical OverviewProgress since last meeting

Brussels 10th February 2005

Michael Fitch

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WP1 tasks

WP 1.1Applications and

Service Development

WP 1.2BusinessModelling

WP 1.3Architecture and

Inter-working

BT 6,4,4Bute 0,0,6UPC 6,0,0

Polito 3,0,0GSI 0,0,3

Skylinc 1,1,0

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WP1 Overview

WP1 : Applications and ServicesWP1.1 Applications and Services Development

D01 was delivered in Feb 04Candidate applications and services

WP1.2 Business ModellingM9 / M12 delivered July / November 04

Business criteria and modelling methods

WP1.3 Architecture Design / InterworkingTrial and measurements for Internet to trains and moving vehicles, report issued 5th Oct 04Network and applications designed and demonstrated in trial 1 at Defford, report issued 10th Nov 04

Experiments in throughput and seamless accessServices from D01 over tethered balloon

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WP1.1: D01 - Services that might make money

L4 Service Delay tolerance

Errors tolerance

BW to user [kbit/s]mean/pk

BW from user [kbit/s] mean/pk

Max OutageToleranceGENERIC Equivalent to (μ+3σ)

Service Availability Required[%]

RTT140 ms

RTT330 ms

RTT533 ms

TCP LAN Interconnect Medium Medium 1000/10000 1000/10000 55 sec

45 sec

30 sec

99.9

Web Browsing (HTTP1.0/1.1)

Medium Medium 10/2000 10/100 99.9

File Transfer (e.g. SW backup)

Medium Medium 10/10000 10/10000 99.9

Email High Medium 1/50 1/50 99.9

Content Distribution (multiple p-p)

High High 1000/4000 1000/4000 99.9

RTP/UDP

Voice/Audio Streaming

Low Low 5-64/5-64 5-64/5-64 2 sec 99.7

Video Streaming High Medium 1000/1000 1000/1000 2 sec 99.99

Content Distribution (IP Multicast)

High Medium 1000/4000 0 or 10/64 N/A (e.g. 1 hour) 90

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D01

Propagation and technology overview30 - 50GHz

Architectures to support services that might make money..Broadcast based broadband delivery

Large number of small users

WiFi / /WiMax backhaulingMedium number of medium users

Broadband to moving vehiclesMedium number of medium users

Special events and disaster recoverySmall number of large users - although the case for providing this depends on more than money

Internet connection to homes and officesNot enough users in coverage area, small market segment

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WP1.2: M12

Business models and acceptance criteria – assumptions

Capex and Operational costs extrapolated from current experience (eg cellular / network costs)Discounted cash flow models with 12% - 18% discount rate and positive flow after 3 yearsInflation and depreciation at 2% PANumbers of users is estimated from mobile market predictions but carry large uncertainty, especially with WiMax and other broadband initiatives

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Trials activity

Test session 1 - Using tethered balloon, August 2004

A trial of broadband to vehicles (such as trains), November 2004

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Test session 1 Network Configuration

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Test session 2 pictures

Multimedia Applications demonstration network for Trial

SkyLINC tethered balloon trial at Pershore, 20-24th of September 2004)

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Test session 1 Applications

Internet Access (simulated ISP using Web Server)

Streaming audio/video media (IP Multicast)

Content distribution (IP Multicast)

FTP downloads/uploads

WiFi backhauling and WiFi Internet Access

IP throughput measurements

IP packet loss measurements

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Test session results 1

Tests were run over operational aerostat (at ~100m) and also when aerostat was grounded (due to moderate to high winds and scaled version)

The multimedia tests and demonstrations were fully successful

Applications performance strongly associated with the aerostat station keeping (when the link was up the bit error rate was excellent)

The “Press Day” was organised on 23th of September (this event was videoed by UoY).

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Test session results 2

Multicasting and broadcasting applications are well suited to radio systems

File Carouseling (IP Multicast) provides a reliable file distribution service that is not time critical

Streaming video performance strongly associated with bit error rate (time critical application)

Internet and WiFi backhauling to rural locations could be a potential strong candidate for HAPS

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BB to vehicles - network diagram

OpenzoneData Centre

InternetAPRedSide

Networkgateway

Satellite

LiveIn-StationWLAN

Traingateway

GPRS CoachAP

Laptops

On train Server:Local ContentPortal

Networkside

Train side

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BB to vechicles - pictures

Broadband connectivity to vehiclesDemo to ONE Anglia (UK ToC) - and further trials planned

WLAN bridge antenna

KVH L3 satelliteantenna

GPRS antennas

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BB to vehicles - routing logic

Use WLANbridge

Satellite downGPRS return

GPRS downGRPS return

When moving and away from stations

When moving and away from stations and satellite is blocked

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BB to vehicles - results

Connectivity Throughput (1Mbyte file)

Round-trip time (10 pings)

WLAN bridge 542kbit/s Mean = 0.0387s,variance = 0.00142s2

Satellite plus GPRS 86.5kbit/s Mean = 1.077svariance = 0.0446s2

GPRS only 19kbit/s Mean = 1.02svariance = 0.0344s2

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WP1 Remaining work

WP1 : Applications and ServicesWP1.1 Applications and Services Development

Deliverable document “Revised applications and Services for BB HAP delivery” (due October 2006) – post trial

WP1.2 Business ModellingDeliverable “Strategy Document: Delivering Broadband for All from Aerial Platforms including commercial and technical risk assessments” (due May 2005)Milestone “Development of commercial risk assessment methodology” (due July 2005)Milestone “Reviewed and updated Strategy Document” (due November 2005)

WP1.3 Architecture Design / InterworkingDeliverable “General network architecture requirements” (due May 2005)Milestone “Development of technical risk assessment methodology” (due May 2005)

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Major outcomes expected in year 2 and 4

Trial 2, Carlo Gavazzi Space HAPS, Sweden, August 2005

Strategy Document: Delivering Broadband for All from Aerial Platforms including commercial and technical risk assessments” (due May 2005)

Business Models for HAPS Services and Applications

General Network Requirements

Continue work on Wireless LAN on trains

Trial 3, CRL/JAXA (details still not known)

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Thanks for listening

Questions ?