A hackathon dedicated to the Babel wireless mesh routing protocol will be held during three days in Paris, at the LeLoop.org hackerspace. The event primarily aims at testing the new features of Babel (diversity, RTT metric, source-specific routing, etc...) in a real-world environment.
Start: Friday 19 July @ 09:00
End: Sunday 21 July @ 22:00
Along with the main events, some talks are scheduled on Saturday and Sunday. Feel free to propose a talk, they will be listed on the wiki page of the event: http://wiki.leloop.org/index.php/Babel_hackathon
More information will be available on LeLoop website: http://leloop.org
Do not forget:
* Bring your laptop/computer and european power plug wire (multiprises)
* Bring your compatible router(s) with OpenWRT pre-installed
* Bring your WiFi antenna(s) and connectors
* Bring your sleeping bag, and if you need hosting send an email
Please register as soon as possible on Framadate: http://framadate.org/studs.php?sondage=q4hlhbsehmh37kgm
The entrance is free, both as in "freedom" and as in "free beer" (although the beer won't actually be free).
La Gare XP
0bis avenue Lucien Descaves
Tramway: Montsouris, on T3a
Metro: Porte d'Orléans on ligne 4
RER: Cité Universitaire on RER B
Google Maps: http://ur1.ca/ej4jb
Open Street Map: http://osm.org/go/0BOc0dK0C--?m
IRC: #babel on irc.freenode.net
Email: baptiste.jonglez at ens-lyon.fr
GSM: (+33) 6 03 72 24 79
Email: bh at udev.org
GSM: (+32) 484 566109
Freifunker aus Halle (Saale) haben einen Film gemacht und erklaeren die Motive und Begeisterung fuer freie Netze.
"Freifunk Halle Interview Loop" von Tmk, Oktober 2009, Creative Commons: by-nc-sa.
The Ninux.org team announced the first “Ninux Day”, a weekend with about and for wireless communities. You will meet software and hardware hackers, geeks, nerds, engineers, artists, the curious and academics. Experts from all over Europe offer technical and social presentations in the area of wireless community networks.
Join the Ninux Days in Rome, Italy, from November 27-29, 2009.
More Info here:
* http://wiki.ninux.org/NinuxDay2009en (English)
* http://wiki.ninux.org/NinuxDay2009it (Italian)
* Announcement: http://blog.ninux.org/2009/09/03/ninux-day-2009
* Ninux Blog http://blog.ninux.org
Xavier Carcelle has put some videos online from the Open Tech Summit in Taiwan at the beginning of 2008. Juergen Neumann of the Freifunk Community talks about the beginnings and history of open Wi-Fi.
The Journal "Community informatics" has published a special about Wireless Networking for Communities, Citizens and the Public Interest. Authors include Michael Gurstein, Alison Powell, Sascha D. Meinrath, Marco Adria, Hanna Hye-Na Cho, Laura Forlano, Andrea H Tapia, Julio Angel Ortiz, Kim Dara, Seán Ó Siochrú, Vidyut Samanta, Chase Laurelle Alexandria Knowles, Jeff Burke, Fabian Wagmister, Deborah Estrin, Ermanno Pietrosemoli, Andrew Clement, Amelia Potter, Alisha Bhagat.
This special issue documents the state of the art in research on community wireless applications, and presents assessments of community wireless projects in a variety of local contexts: from large urban centers in North America to rural locations in Asia and Latin America. Together, the papers and field notes in this special issue reflect on a community-centric approach to communications infrastructure development. These works describe the challenges – both practical and theoretical – that face community wireless networking, as well as the implications many of these projects have to support social and economic justice around the globe.
The papers in this special issue demonstrate that community-based approaches to Wifi development are part of a broader integration of technology, organizational capacity, and local culture. Social goals are part of most community Wifi projects, and integrating these goals and the technical structures of Wifi networks is part of what makes many community Wifi projects successful. Both full papers and field notes explore this integration and focus on various facets of the community wireless networking movement.
The papers included in this issue explore different theoretical approaches that help situate community wireless networking as social and technical phenomena. Adria provides a meta-theoretical discussion of how Wifi networks reconfigure space and time -- using the medium theory of McLuhan and Virilio to suggest that Wifi networks have the potential to integrate local geographical and temporal experiences.
The other papers use empirical approaches to assess the social aspects of community wireless networking. Tapia and Ortiz explore the claims made by operators of municipal-community networks that these projects are addressing the digital divide. Using a textual analysis of claims made in documents including “press releases, requests for proposals, letters of intent, and other official policy documents,” as well as interviews with key informants in US municipal-community projects, they interrogate the extent to which networks facilitate meaningful digital inclusion.
Both Cho and Forlano explore the social aspects of community wireless networking in more detail: Cho focusing on the development of networks and Forlano on their use. Cho reveals how the development of community wireless networks (CWNs) builds social capital for the participants. She develops the concept of “place-peer community” to explain how Wifi projects define “community.” Cho also describes how contributions to community wireless networks help to develop ‘civic bandwidth’ among their contributors. Like Tapia and Oritz, she identifies CWNs as developing a discourse that connects the development of digital information and communication technologies with efforts to improve communities.
Forlano explores the new social relationships created through the everyday use of community-based Wifi networks, examining the gap between media representations of Wifi as an “anytime, anywhere” solution and the socio-cultural practices of people using free Wifi hotspots in New York City. As she discovers, freelance workers use Wifi hotspots to create temporary working environments that eliminate some of the isolation of working without a fixed office, while providing a basic infrastructure including network connectivity and electrical power. These Wifi hotspots support communities of mobile, flexible workers who establish relationships with a particular place and its people. Together with Cho’s insights about the social capital mobilized through the process of developing community Wifi networks, this suggests that Wifi hotspots may have a unique role to play in redefining the experiences of community in urban areas.
The field notes in this issue offer a window into the realities of local experiments with Wifi technology. The impacts of the projects they document depend on the local political context (Clement), the community’s capacity (Dara, Dimanche, and O Siochru; Bhagat), the potential for community and industry partnerships to create new ways for community members to gather data and to aggregate it (Samanta), and how changing our assumptions about the role of wireless infrastructure can open up new opportunities for affordable broadband (Pietrosemoli).
These notes highlight how local contexts influence what is considered the “public interest” and how community wireless projects can best serve the general public. For example, Clement criticizes the Toronto Hydro Wireless project, considered a technical success, because its governance structure forces the network to be operated for-profit rather than as a public service. Samanta provides an outline of some potential social uses for an experimental wireless network that could aggregate data from numerous wireless devices. Some suggested uses of this network include collecting ambient audio data that, when mapped, could provide quality of life indicators.
In the global South, the public interest is served by the communication and applications made possible by wireless networks established in previously un-served areas. In these contexts as well, important challenges also emerge. Bhagat assesses the results of a mesh network built in Mahavilachchiya village where a local entrepreneur developed a wireless network as an extension of a computer school where local children learned ICT skills. This Wifi connectivity project extended internet access to homes, and encouraged more local residents to use the internet. However, Bhagat also notes that connecting the village to the internet may have negative impacts as well: introducing new forms of media and new social expectations to the village and disrupting historical cultural norms.
Dara, Dimanche and O Siochru explore how local political and social contexts impact the design and deployment phase of one local wireless network. From the challenging context of Cambodia, they report on the first phase of the I-REACH project, a distributed mesh network providing internet connectivity and local media using solar-powered devices. The project’s challenges in obtaining permission from local government, sourcing material, and recruiting qualified local staff and contractors underscores the notion that community-based infrastructure implementation is a social (and an institutional) as well as a technical endeavor.
Ermanno Pietrosemoli and his international team of Wifi researchers have deployed wireless links spanning hundreds of kilometers. By proofing out a methodology for creating low-cost, long-distance Wifi, Pietrosemoli forces us to question the notion that Wifi is just for local networking. As a potential backhaul solution, Wifi may offer an exceptional value for communities and constituencies that would not otherwise be able to afford broadband connectivity.Across these paper and notes, a common thread linking the articles is the importance of establishing local strategies for leveraging wireless technologies in the public interest. (Alison Powell, Sascha D. Meinrath, Introduction to the Special Issue: Wireless Networking for Communities, Citizens and the Public Interest, Vol. 4 No. 1, 2008, http://ci-journal.net/index.php/ciej/article/view/490/389)
Marek Lindner and Simon Wunderlich from the Berlin freifunk community gave a talk on Wireless Kernel Tweaking and the B.A.T.M.A.N. routing protocol at the 24c3 Chaos Communication Congress. The video is now available on the torrent network.
Kernel hacking definitely is the queen of coding but in order to bring mesh routing that one vital step further we had to conquer this, for us, unchartered territory. Working in the kernel itself is a tough and difficult task to manage, but the results and effectivity to be gained justify the long and hard road to success. We took on the mission to go down that road and the result is B.A.T.M.A.N. advanced which is a kernel land implementation of the B.A.T.M.A.N. mesh routing protocol specifically designed to manage Wireless MANs.
During the last years the number of deployed mesh networks has increased dramatically and their constant growth drove us around the edge of what we thought was possible. To cope with this rapid development we had to leave the slow and limited track of tweaking existing approaches and take an evolutionary step forward by porting the B.A.T.M.A.N. protocol into the kernel land and going down to layer 2. Using B.A.T.M.A.N. advanced as a showcase we will, in our lecture, deliver a detailed review on how one can go about developing linux kernel modules, give insights in what difficulties to expect and provide practical tips on how to go about this challenge without experiencing a damaging kernel freeze in due process.
We will describe what problems we faced migrating down to layer 2 and how we went about solving them for example how we moved away from the kernel routing and handle the actual routing and data transport in B.A.T.M.A.N. itself. Also moving to layer 2 meant to leave IPs behind and solely rely on MAC-routing enabling features like DHCP, IPX, IPv6, etc which up to now was not possible and therefore comes as a big plus. On the other hand there were little if none diagnostic tools at all for routing on that level so we had to go back one step and develop the tools we needed ourselves.
These and other things we will cover in our presentation and also give an outlook into the future of mesh-routing, which will bring it even closer to the source of wifi - the wireless stack and its drivers and thereby improving the overall performance even more.
vom Freitag 2. bis Sonntag 4. Mai 2008 werden freifunk.net, c-base und die Berliner Community wieder ein *Wireless Community Weekend* auf der c-base Raumstation in Berlin ausrichten. Für den Event hat Cven bereits eine Wikiseite eingerichtet unter:
Unter „Wishlist“ gibt es hier Platz für euer Topic-Brainstorming.