another way to do it is with ultra cheap linksys freifunk/funkfeuer approach.
See http://funkfeuer.at or http://www.freifunk.net we are doing nice backhaul links with 5ghz equipment BTW. (cf. osbridge.com) very stable and very high thruput over 15km On Wed, Nov 08, 2006 at 08:26:42AM -0800, Krishna Sankar (ksankar) wrote: > >From what I know, the OLPC mesh is based on the IEEE 802.11s standard. No > >need for any new radios, the 802.11s is an addendum to the existing > >802.11a/b/g standards. It adds a few more fields, a mesh routing mechanism > >et al (Am preparing for a lecture on the 802.11s. May be, I will send out > >the notes) > > Reading thru your e-mail, there are two vectors - the backhaul > (interconnecting schools) and local network (interconnecting the laptops). > The backhaul technologies can be independent of the local network. They could > be the same as well. For example the MIT roofnet could possibly do both - > there are 400mW wireless cards (MP-8602, > http://www.yawarra.com.au/pdfs/XC-MP-WFabg-400.pdf) which have a span of ~40 > km for backhaul, with directional antennas, of course. (I do not have the > links, let me know if you couldn't find them) > > Got to run ... Hopefully I have answered some of your questions ... Do not > hesitate to ask questions as you think thru the various aspects of the > network like line of sight, what is in between et al. > > Cheers & good luck > <k/> > > > ________________________________ > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tadeu F. > Oliveira > Sent: Wednesday, November 08, 2006 8:13 AM > To: [email protected] > Subject: [OLPC Networking] Wireless Mesh tests > > > Hello everybody, > > I and a group of volunteers are creating an wireless network to > interconnect the schools in our city, we are at this moment in a testing > period trying to figure out witch technology to use (Wi-Fi, Wi-Max, Motorola > canopy...) but one important goal of this project is to be compatible with > the OLPC laptops. > > In the laptop.org Wiki I have founded this > http://wiki.laptop.org/go/Wireless saying: "There is new firmware with mesh > routing support" and that the chip Marvell 88W8388 is compatible with the > 802.11b/g great! But my question is: The mesh feature needs some different > equipment to support it? I mean in the radio-base section is it necessary to > have some different thing than a 802.11b/g radio? > > When will the Laptops be available to test the wireless network > features? I really would like to make some tests with it in my area. I do not > intend to keep it with me for too much time, I just need to test it so I > would put 2 or three of it working and after the tests would deliver it back > to anyone who needs to test it too. > > Greetins from Brazil > > Sorry for my poor English > > Thank you all > > > ---------------------------------------- > Tadeu F. Oliveira > Técnico em Informática > Acadêmico Ciência da Computação Unit-SE > http://notnet.blogspot.com <http://notnet.blogspot.com%20> > ---------------------------------------- > > > ________________________________ > > Novidade no Yahoo! Mail: receba alertas de novas mensagens no seu > celular. Registre seu aparelho agora! > <http://us.rd.yahoo.com/mail/br/tagline/mobile_alerts/*http://br.mobile.yahoo.com/mailalertas/> > > _______________________________________________ > Networking mailing list > [email protected] > http://mailman.laptop.org/mailman/listinfo/networking > _______________________________________________ Networking mailing list [email protected] http://mailman.laptop.org/mailman/listinfo/networking
