Hi,

I have a number of routers, servers, number of WiFi APs (bridges)
and would like to set up a small testing bed for WiFi mesh with
Inter-WiFi handover , like in cell telephony.

There is a number of market solutions, unfortunately none to be declared to be working with my WiFi APs, servers, routers.

I just need to use maemo N810 to move on the-fly between WiFi APs
and hsave uninterrupted voice, multimedia brodcasting delivery two-way chat (Skype and the like) two-way video like in 3G networks.

Nothing special.
What I need is a helpful hand to implement some shell scripts on server to
perform intelligent dynamic rerouting and rerouting mapping
and have distributed or central control managment system like in cell telephony.

Ok.
I can describe in details how cell telephony works, inter-base stations
handover and the like.
The problem is I am not much experienced to implement such solutions into
Wifi mesh.

If you are interested in my project please join , discuss or refer me to
ready-made solutions, reference materials, manuals and HOW TO - like sources and resources.

Why maemo ?
Maemo is Linux based embedded device so there is a chance to run tests and discuss the stuff in open.

Darius
tinyurl.com/dariusjack

Suggest you look at the DD-WRT script "autoAP". This may give you some ideas.


From the wiki
"AutoAP is a script that continuously scans for open Wi-Fi connections, tests them for validity, and connects to the strongest signal. If the connection is lost, the script scans again and finds the strongest valid signal again, and maintains a continuous connection to the internet in a mobile or portable environment. The script paremeters are highly configurable, including ability to configure secure connections. "

Parameters include:
Filters to avoid logging onto specific SSIDs
Filters giving preferential logging onto specific SSIDs, including encyption key values


Script can also verify that successful wifi connection also allows internet access.

I would love to see something like this adapted to run on the Nokia tablets.

See
http://www.dd-wrt.com/wiki/index.php/Autoap
and
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=6575

Thanks.
Exactly that idea.
http://sourceforge.net/projects/autoap/?abmode=1

Frankly speaking it works already in meamo to some extend and in iPod Touch with a database of known and saved APs/ Wifi
and reconnect can be set on .
Another issue is to have a parallel process/ script running to
scan for APs around and scanning for signal strength (like kismet).
What is hot is predictive mode, to have the same script run on APs
to map a mesh as a topology , like in GPS car navigation routing
and have TPC to scan and request undelivered packets.

Ok.
So what is hot is mapping / geolocation of APs and reporting signal strength to a central database, to be distributed among wifi clients.
Such application can incorporate wifi based (non-GPS) geolocation/navigation, already supported by iPhone.

And what I call dynamic rerouting is a feature to have packets to follow
mobile maemo client as what is ok and fine for 1-2 test users is not ok for a working mesh model of cell telephony / wifi mesh network.

And final hot stuff is vehicle (mobile wifi mesh) self-arranged
or dynamically rearranged wifi mesh topology
to assure bandwidth (dynamic bandwidth management) and signal quality.

darius
tinyurl.com/dariusjack

Your first problem is the WiFi drives can not be connected and scan at the same time. So unless Nokia decides to add that support (ha) or you manage to RE/find appropriate softmac drivers you are dead in the water.

Exactly.
That issue can be solved by a use of twin-WiFi routers, running shell scripts.
One part does scanning, another standard routing.
Nothing special as long as double sim card cell phones are already on a market.
Single wifi router can be acquired at about $100,
so for tests not great problem to use 4-6 wifi routers.
What is much more complicated is routing algorithm for wifi mesh.

Greetings to your baby

darius

Hi guys. First I am just a user and will leave the programing to the experts.
I am very interested in this sort of app. I currently have a mesh network and am unable to walk from one node to another without reconnecting.
I am running hardware from www.open-mesh.com. It
works great! I connect as if its one router but get coverage from two separate nodes. (more nodes to be added). The only problem is my n800 wont "hop" from one node to another without disconnecting then reconnecting. Is this a hardware issue or software?

Normally this works with WDS (although not mesh network) but there are some settings which must be exactly the same on the various APs. See http://en.wikipedia.org/wiki/Wireles...ibution_System