1 WP1 Technical Overview Progress since last meeting Brussels 10 th February 2005 Michael Fitch

2 WP1 tasks WP 1.1 Applications and Service Development WP 1.2 Business Modelling WP 1.3 Architecture and Inter-working BT 6,4,4 Bute 0,0,6 UPC 6,0,0 Polito 3,0,0 GSI 0,0,3 Skylinc 1,1,0

3 WP1 Overview WP1 : Applications and Services WP1.1 Applications and Services Development D01 was delivered in Feb 04 Candidate applications and services WP1.2 Business Modelling M9 / M12 delivered July / November 04 Business criteria and modelling methods WP1.3 Architecture Design / Interworking Trial and measurements for Internet to trains and moving vehicles, report issued 5 th Oct 04 Network and applications designed and demonstrated in trial 1 at Defford, report issued 10 th Nov 04 Experiments in throughput and seamless access Services from D01 over tethered balloon

4 WP1.1: D01 - Services that might make money L4ServiceDelay tolerance Errors tolerance BW to user [kbit/s] mean/pk BW from user [kbit/s] mean/pk Max Outage Tolerance GENERIC Equivalent to (μ+3σ) Service Availability Required [%] RTT 140 ms RTT 330 ms RTT 533 ms TCPLAN InterconnectMedium 1000/ sec 45 sec 30 sec 99.9 Web Browsing (HTTP1.0/1.1) Medium 10/200010/ File Transfer (e.g. SW backup) Medium 10/ HighMedium1/ Content Distribution (multiple p-p) High 1000/ RTP/UD P Voice/Audio Streaming Low 5-64/ sec99.7 Video StreamingHighMedium1000/ sec99.99 Content Distribution (IP Multicast) HighMedium1000/40000 or 10/64N/A (e.g. 1 hour)90

5 D01 Propagation and technology overview GHz Architectures to support services that might make money.. Broadcast based broadband delivery Large number of small users WiFi / /WiMax backhauling Medium number of medium users Broadband to moving vehicles Medium number of medium users Special events and disaster recovery Small number of large users - although the case for providing this depends on more than money Internet connection to homes and offices Not enough users in coverage area, small market segment

6 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 years Inflation and depreciation at 2% PA Numbers of users is estimated from mobile market predictions but carry large uncertainty, especially with WiMax and other broadband initiatives

7 Trials activity Test session 1 - Using tethered balloon, August 2004 A trial of broadband to vehicles (such as trains), November 2004

8 Test session 1 Network Configuration

9 Test session 2 pictures Multimedia Applications demonstration network for Trial SkyLINC tethered balloon trial at Pershore, th of September 2004)

10 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

11 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).

12 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

13 BB to vehicles - network diagram

14 BB to vechicles - pictures Broadband connectivity to vehicles Demo to ONE Anglia (UK ToC) - and further trials planned

15 BB to vehicles - routing logic

16 BB to vehicles - results ConnectivityThroughput (1Mbyte file) Round-trip time (10 pings) WLAN bridge542kbit/sMean = s, variance = s 2 Satellite plus GPRS86.5kbit/sMean = 1.077s variance = s 2 GPRS only19kbit/sMean = 1.02s variance = s 2

17 WP1 Remaining work WP1 : Applications and Services WP1.1 Applications and Services Development Deliverable document “Revised applications and Services for BB HAP delivery” (due October 2006) – post trial WP1.2 Business Modelling Deliverable “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 / Interworking Deliverable “General network architecture requirements” (due May 2005) Milestone “Development of technical risk assessment methodology” (due May 2005)

18 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)

19 Thanks for listening Questions ?