OSDL Wireless Summit April 7, 2006

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Presentation transcript:

OSDL Wireless Summit April 7, 2006 Linux and 802.11 from the perspective of a community wireless group The Personal Telco Project www.personaltelco.net

Outline Outline A Brief Introduction Typical Personal Telco Nodes Hotspot Rooftop Some of our projects Linux Wireless Needs

about Personal Telco About Personal Telco A volunteer-based 501(c)3 non-profit corporation dedicated to: "Promote and Build Public Wireless Networks through Community Support and Education” Started in August 2000 by unemployed geeks. Support installation and operation of about 100 free wireless hotspots in/around Portland.

about Personal Telco The Goal User owned/operated communications infrastructure... Using off-the-shelf and hacked hardware to route around Telco monopoly damage. Learn, Educate, Build, Share.

about Personal Telco A Typical Hotspot DSL connection from friendly ISP. Linux server acting as gateway and captive-portal (e.g. NoCatAuth) A consumer-grade Access Point with SSID: “www.personaltelco.net” Often located in a cafe and serving a dozen or more users a day.

about Personal Telco A Typical Rooftop Node DSL connection from friendly ISP. A single-board computer (e.g. Soekris 4826), in a weatherproof enclosure: mounted to a chimney using an omni. antenna power over ethernet (PoE 802.3af)

about Personal Telco A Current Project Mississippi Grant Project An effort to provide free wireless internet to a neighborhood in North Portland. Operating on $15k grant Internet connection donated. Uses dual-radio soekris boards, Atheros radios, 802.11a backhaul, b/g for local service. Covers about a ½ mi square

about Personal Telco Other Projects Experimenting with MIT's roofnet Experimenting with OLSR Network stumbling using a Netgear WGT634u running OpenWGT (Linux) Building two-radio “repeaters” using a Netgear WGT634u and a USB radio.

about Personal Telco Linux Wireless Needs 802.11 a/b/g driver support. e.g., Atheros (madwifi): master and managed modes adhoc for mesh wds

Linux Wireless Needs about Personal Telco

about Personal Telco Linux Wireless Needs Driver support for USB radios. e.g., Zydas (zd1211) monitor mode (for stumbling) should support more than one device at a time our repeater mysteriously loses association documentation: Zyxel USB radio doens't work with zd1211 despite manufacturer's claims Support for non-PC architectures (e.g. for embedded devices: OpenWRT and similar)