Post on 06-Jan-2018
description
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
Copyright 2005 Stg Wireless Leiden
How ?
Why ?
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)
Copyright 2005 Stg Wireless Leiden
no hotspots, but a routed, independent all-wireless network
Copyright 2005 Stg Wireless Leiden
Example(small business)
Copyright 2005 Stg Wireless Leiden
Solution: ‘win - win’
Secure ‘vpn’ connection using Wireless Leiden
Copyright 2005 Stg Wireless Leiden
Internet connectionvia gateways ('proxy')
For >1000 users a 'basic-adsl' – capacity
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
Copyright 2005 Stg Wireless Leiden
Regional network
Benthuizen
22 km
Copyright 2005 Stg Wireless Leiden
Node IMI was sponsored by IMI, Institute for Societal Innovation, Leiden
Copyright 2005 Stg Wireless Leiden
Copyright 2005 Stg Wireless Leiden
Status after 2 years
• 4000+ users (750 daily Internet users)
• commercial spin offs (start up companies)
• 'living laboratory' for technological and social innovation
Copyright 2005 Stg Wireless Leiden
International interest
Montreal
San Francisco
Kinshasa, Buffalo City (?)
Iraq (?)Paramaribo
Philippines (?)
Karaman
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
Copyright 2005 Stg Wireless Leiden
Potential ApplicationsLow cost access (Internet-) information and educationInterconnect 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 networkRealtime environmental monitoring (e.g. noise)