2. Copyright 2005 Stg Wireless Leiden Wireless Leiden a community network and 'living laboratory' A free, fast and inexpensive wireless computer network for Leyden and surroundings

3. Copyright 2005 Stg Wireless Leiden How ? Why ?

4. Copyright 2005 Stg Wireless Leiden Non-profit, 30 professional 'hobbyists' Open standards / open software Free radio frequencies (WiFi ) Inexpensive hardware Coöperative, planned approach Open to individuals, companies, organisations No subsidies, solve real problems for real people Primary focus on fixed-wireless, no roaming Wireless Leiden Foundation (2002)

5. Copyright 2005 Stg Wireless Leiden no hotspots, but a routed, independent all-wireless network

6. Copyright 2005 Stg Wireless Leiden Example (small business)

7. Copyright 2005 Stg Wireless Leiden Solution: ‘win - win’ Secure ‘vpn’ connection using Wireless Leiden

8. Copyright 2005 Stg Wireless Leiden Internet connection via gateways ('proxy') For >1000 users a 'basic-adsl' – capacity

9. Copyright 2005 Stg Wireless Leiden The City Network Realtime on our website Over 60 network nodes City of Leiden fairly well covered Extending to the region

10. Copyright 2005 Stg Wireless Leiden Regional network Benthuizen 22 km

11. Copyright 2005 Stg Wireless Leiden Node IMI was sponsored by IMI, Institute for Societal Innovation, Leiden

12. Copyright 2005 Stg Wireless Leiden

13. Status after 2 years 4000+ users (750 daily Internet users) commercial spin offs (start up companies) 'living laboratory' for technological and social innovation

14. Copyright 2005 Stg Wireless Leiden International interest Montreal San Francisco Kinshasa, Buffalo City (?) Iraq (?) Paramaribo Philippines (?) Karaman

15. Copyright 2005 Stg Wireless Leiden Characteristics Low investment and operational costs Very rapid deployment Flexible High bandwith (4 to 16 Mbps for data) Very low energy (100 mW limit) BUT Less reliable (shared medium: interference may occur) Local regulations may differ

16. Copyright 2005 Stg Wireless Leiden Potential Applications Low cost access (Internet-) information and education Interconnect health services (VPN) Remotely assist health care at home (video link) Access medical information (mobile health workers) Emergency services (ambulance uploading photographs etc.) Rapidly deploy emergency network Realtime environmental monitoring (e.g. noise)