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Technical Overview

David Grace (UOY)

First Annual Review, Brussels 10 February 2005

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Introduction

CAPANINA Overview The Scenario

Progress on the project objectives

The three strand approachApplications and Infrastructure

System Testbed

High-speed vehicle application

Conclusions

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The CAPANINA Scenario

Not to Scale!

Up to 120Mbit/s

31/28GHz, (47/48GHz)+ optical backhaul & interplatform

17-22km

Fixed BFWA particularly for rurallocations

Moving Train

Up to 300km/h

WLAN

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Project Objectives 1

HAP broadband systems, applications, and services.

To develop technologies for low-cost broadband from HAPs for hard to reach users

Work underway across the project

To perform trials of broadband from aerial platforms – e.g. High-speed Internet, VOD

Already completed for Trial 1

To construct an outline system design for broadband delivery from HAPs to high-speed

vehicle users.

Work will be presented in a new Deliverable due month 35

To inform regulatory/standardisation bodies such as the ITU on HAP broadband

ITU submission on spectrum sharing scheduled for April

FP6 COPRAS helping with setting a roadmap to influence standards bodies

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Project Objectives 2

Broadband links, networking, and support infrastructure for HAP systems.

To assess the mm-wave propagation environment from aerial platform architectures.

Use models and data sets from terrestrial and satellite models

Basic propagation data from trial 1

To develop multiple HAP constellation strategies, so as to increase capacity/diversity

Work underway in WP2.4

To construct an effective resource management methodology for a single HAP system.

Work has just commenced at UOY

To develop/evaluate HAP network architecture(s) for mm-wave band and free space

optical transmission technologies.

WP2.5 just started in month 15

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Project Objectives 3

Broadband communications node technology for HAP systems.

To evaluate mm-wave band steerable antenna technology

Work well underway in WP3.2 and WP3.3

To develop cutting-edge signal processing technology for mm-wave smart

antennas.

Work well underway in WP2.3 and WP3.3

To evaluate/test free space optics technology for the eventual delivery of

broadband interplatform and backhaul links from aerial platforms.

Work well underway in WP3.4, Trial 1 FSO was a complete success

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Broadband Applications

Select applications that are most compelling for HAPs

ApplicationsBroadband Internet Access to residential/SOHO marketBroadcast based Broadband Special Events and Disaster Recovery broadband connectionsWiFi on trains and bus-coaches Internet backhauling

More Later!

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HAP Cellular Architecture

60km

Backhaul via satellite for remote areas

FibreNetwork

Broadband Services

FibreNetwork

Local Backhaulto Hub for lessremote areas

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Multiple HAP Single Cell Architecture

User Group 1

HAP 1

Service area, served by overlapping HAP coverage

User Group 2

HAP 2

Same coverage area – same spectrumIncrease capacityIncremental deployment

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ITU – Spectrum Sharing in 31/28GHz Bands

European HAPS ModelPreliminary Draft Revision to Recommendation (PDRR)More stringent antenna masksReduced Coverage Area

Spectrum sharing studies, including HAPS Ground Station into BFWA Ground Station

More Later!

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System Testbed

Undertake trials under a common frameworkEnables multiple partners to work together efficientlyCommon measurement criteriaEfficient system integration

PayloadsBroadband WirelessFree Space Optics

Test TimetableAug–Oct 2004 Tethered Aerostat, Pershore, UK(August 2004 Supplementary Trial: WLAN on trains, UK)Summer 2005 Stratospheric Balloon, Kiruna, Sweden2006 High Altitude Platform, Japan/Hawaii, USA

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Trial 2 – Stratospheric Balloon

‘Kiruna, Sweden’ Trial

Scheduled for Summer 2005

FSO – Platform - Ground

mm-wave Broadband apps

Examples of Previous Trials

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Trial 3 – High Altitude Platform

‘Japanese’ Trial

Scheduled for 2006

Planning in Progress

Pathfinder Plus HAP

Wireless tests (NICT)

FSO – platform to ground

Attitude Measurements

Examples of Previous Trials

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WLANWLAN

The High-Speed Mobile Application

300km/h

Up to 120Mbit/s (aggregate)

Phased Array, Smart Antenna/Mechatronic

Down conversion, signal processing, general processing,on board caching, distribution to carriage WLANs

Possible standards:IEEE 802.16IEEE 802.20HIPERACCESSDVB-S, DVB-RCSDVB-T

Possible Services:High speed InternetVideo-on-demandCorporate Services

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High Speed Train - Standard Selection

Range of standards have been examinedIEEE FamilyETSI BRAN – HIPERACCES, HIPERMANDVB Family

No single standard appropriate for high-speed train scenario

IEEE802.16SC is the best overall choice

Will form the basis for future work

COPRAS Project provided assistance

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Ongoing Propagation Activity

Channel Simulator for 31/28GHzModels both short term and long term effects

Outages and appropriate mitigation strategiesRailway Infrastructure

Effect of TunnelsBridges, Gantries

Rain

Doppler Shift/Doppler spread

Scintillation Are high order modulation schemes affected?

MultipathWhere is it an issue at 28/31GHz, for data rates in question?

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Ongoing HAP Smart Antenna Activity

8x8 antenna array

Desired user (black dot), 31 interferers (white dots)

Capon beamforming to place interferers in nulls

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Lens Antenna Example

For HAP or train use

Tests at York

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Conclusions

CAPANINA - ‘Broadband for All’

Hard to reach areas – rural, trains

Mix of near term development and long term research

Applications and Architectures

E.g. high speed internet, broadcast based broadband

Single and multiple HAP architectures

Trials and Equipment

Stepped trials of the technology (UK, Sweden, Hawaii/Okinawa?)

Mm-wave band and free space optical technologies

High-speed Mobile – Users on a train

Standards selection, propagation impairments

Smart and steerable antennas