The page (Wi-fi) WiFi TOULOUSE of yves MAGUERDate back to creation: 03/02/2003
Last update: 23/11/2004
Source of this page: Files\SDL\ETSyves.maguer.free.fr/WiFi/page_tlse_wifi_yves.htmlL}}
A network WiFi maillé (meshed network) on Toulouse
Has translation i's possible here
Date back to the last generation of the network: Wednesday November 24 2004 to 18:30
Pseudo of the last inventoried one or modified or eliminated: P_dard
Isolated Wifistes: stm, laronde

I did the housework, I eliminated the wifistes of which the email does not work.

A network does by the special ones and for their usages.
Liaisons internets divided between we, liaisons between we free (out purchase of equipment).
It is legal in the whole France.
The principal obstacle to the WiFi, this is that the people do not there believe, because one is got used to to pay to have something.
But if this Microsoft that the said, you there believe?
Do you have absorbs the purchase and the installation of your antenna Tv?

I am currently unemployed and I look for work on Toulouse.

Brief

Usage of this page
My page of explanations on the WiFi
The events inhabitants of toulouse
Chronology of the actions to rejoin the network
First to inventory itself
Once inventoried, see which are the 3 wifistes with which these I must do a link
The results of the essays in the field
Drawing of the network maillé possible
Simulation software
This that does my software
Prejudged on the distances
Do its purchases
Of other projects of maillage
Various / to contact me
Hotspots inhabitants of toulouse free
Our network project
Reading of the results of the calculation of the maillage
A former outline of the network
My motivations

Usage of this page

Attention: as this page evolves, it is necessary rafraichir the links to have the last version (shift reload).

This page easily can be recorded ( "File", "To Record under...") to be consulted when the connection is cut.

In the menus of the navigator, one does "to look for in the page..." to look for a word in this page.

The events inhabitants of toulouse

Meeting the Saturday December 04 2004 to 14h30 to the room Pastel to Ramonville
(next to the dive pit "the argaunote")
(Park Tech Canal bât Navy 14 r Hermes 31520 HOLY RAMONVILLE AGNE)

A world without wire to the paw!
Lecture of the BROADCASTING CLUB AND MULTIMEDIA OF THE BIG TOULOUSE
Thursday October 14 2004 to the médiathèque José Cabanis 19h00 (free entry)

Caroparty Saturday 02/10/2004 afternoon, to the 25 ways Catala (toulouse/lardenne)
Here some photos.
The 4 made antennas have a gain of 10 to 12 dBm, in comparison to a SD15 of 13DBM.

The party of the net one the Saturday April 3 2004 of 14H to 18H. It was to Odyssud Blagnac
We did a link between Odyssud (Blagnac) and pech-david (Rangueil) (10KM)
Pech-david: (SD27+PC+webcam)
Odyssud (SD27 + AP + wifi_USB + PERCENT + vidéoprojecteur)
The link of 10KM has well walked, the link in Odyssud, less well!

One can note that ouinouin obtained equally the ap USR2249 with its 2 origin antennas to 10KM,
but with 20DB of less that the SD27.

Here the result of the BURDENS of my page during the party of the internet.

Chronology of the actions to rejoin the network

The first action to do is to obtain itself a compass and to inventory itself (you send me a mall with required the news below).
The second action is d'to buy equipment WiFi (if possible with of the connectorsof antennas), if there is not connectors, one can usually some to put nonetheless (while tinkering with), but one loses the guarantee on equipment,
The WRT54G of linksys (under GPL Linux 2.4) is today ideal equipment for us (one there can put AODV, OLSR and full d' something else).
The third action is to do essays with the antennas (of each quoted link) the most performance ones of the market (they done 91CM x's 91CM, one will be able to lend some to you when the association some will have the means). If the result of my simulation, for this link, give a power margin sufficient, one can test the link with antennas done from woods of "ricoré" (less cluttering and that cost only the connectors). After rain, the roofs are slick, therefore to take into account the forecast. Certain links will be done without direct view, therefore one will be able to test just as well harms it (after the tubby one).
The fourth action is to stabilize the solution, if the antenna is behind a window, set up the antenna to the wall. If the antenna is on the roof, to set up it to a fireplace or put a mast,
The fifth action is to take advantage of the network:
- telephone (on IP) free between wifistes of the network (on skype my pseudo is: yves_mag),
- relayage in city, television on ADSL (beyond 2000M), ADSL2 + (1500m), VDSL (1500M)
- visioconférence (on IP) (netmeeting for example) free between wifistes of the network ( gardiennage for example),
- divides access internet (ADSL or cable) to 4 persons, therefore for a quarter of the price of the market (with a routeur oubien the lit PERCENT and a software (winroute)),
- divides price of the subscription to France Télécom between wifistes (for those that do not use anymore the filaire to telephone),
- games in network, "ping" of 3MS between 2 wifistes of the network,
- divides a part of the hard disc of every wifiste (if I offer 1/5ième of my disc and that one is 100, I have access to 20 hard discs in line, (you already done that witheMule, or filetopia, or Kdrive (to come), but with the debit of the WiFi, you could read the files (mp3, divx) in real time (to choose them before to download them),
- television radio local on the network wifi,
- télémaintenance (done to fix your PERCENT from afar) (he must walk a little nonetheless!),
- sold of a connection internet to the passes (it is illegal alas! damage, for some win 1200euros/mois with that!)
- the remainder this is at you to invent it!

You also can await as a professional offer proposes youwifi, to this day this is 10EUROS hour, I repeat: 10euros/heure.

And then, one can dream! : A day will come...or an accesses Supplier Internet will connect internet directly on our network wifi...(this is this that begins being done in the countries with the solution satellite + wifi).
Stronger again: to buy our own access internet (to connect itself directly on the links views)!

First to inventory itself

For you to add (to inventory you)(or you to remove) on
the list of the wifistes inhabitants of toulouse potential , you indicate me:

- postal address, with the postal code, to go at your place, to test with our performance antennas,
- geographic coordinated (GPS) in degrees, minutes, seconds and decimal, available degrees on maporama.com,
- email (I would eliminate the @ for that it be not exploitable by the robots that send undesirable mail (spam)),
- name (optional, but this is better),
- first to name,
- telephone number (seen that the email changes often because of the pourriel, that the woods to the letters are full, etc)...
- pseudo,
- number of floors or the height of the antenna (in comparison with the ground) that you could put on your roof or your balcony,
- azimuths (angle in comparison with the North, indicated by a compass) for which you have an obstacle (example: 90 to 270° (not any window to the SOUTH), 100 to 200° (a tree to 20m), 210 to 220° (a building that surpasses me of 2 floors, to 50m)).

in a email to Yves Maguer

Once inventoried, see which are the 3 wifistes with which these I must do a link

My software (that represents a year of work, and that I would not give free) calculates which are the 3 wifistes that each must join bywifi, to do a network maillé with a minimum of directional antennas.
On the other hand I am involved myself to furnish these calculations free for Toulouse. For other cities I count to furnish this service free for less than 20 wifistes.
For certain pseudos, there is not result, that means that these wifistes are be:
- "isolated", this is to say joignables by no one else to the moment of the calculation,
- "ratachés" to another situated wifiste to less than 100M and that is more in height (therefore joignable with the antennas omnidirectionnelles).

This page is the reflection of the file text, produces by my software.

The results of the essays in the field

A summary of the density of potential wifistes on the paved coast:

On these 35 potential wifistes, not can no do link with the origin antennas (OMNIdirectionnelles).......it is stupid......no?

And in the field, that gives what?

I do not speak here that of the punctual essays, the links set up will not be broadcasted on internet.
I would indicate simply the sum of the every link distances.

Ben, the first valid link was done between the room pastel and serge (6KM, patch (40° of opening) + ricoré).
Second link between Yves (me) and the "white ball" on the hills of Pech David (6 Km, SD27 + SD27, between 2 firs).
Third link between Yves and John paul (-80 dBm, 5 Km, SD27 + SD27, not any visibility with the eyes, too far).
I specify that I did not be at my place when John paul obtained my AP, I oriented my antenna with a compass and I left (in meeting wifi).
Ca wants to say that one does not need to synchronize itself to do essays!!
The fourth link was done between "dijou" and "ouinouin" (900 m), with 2 SD27 (or antennas ricoré), but with an estimated obstacle to 1 meter.
Lardenne / Rouffiac Tolosan (2 SD27, 15 Km, not any direct view, in city),
Rouffiac Tolosan / Gauré (2 SD27, 10 Km, not any direct view (colline)),
Rouffiac Tolosan / Montrabé (3 Km, 2 SD27, not any direct view (colline)).

John paul found 23 ap/clients wifi with his SD27 on the roof of his building to the 17IÈME floor.
Ouinouin found 28 ap/clients wifi with his SD27 on the roof of his building to the 7IÈME floor.

Currently, my antenna SD27 (zoomée) (to quoted of my antennaTV) is oriented towards "ouinouin".

The links that do not walk are:
yves/xavier (xavier are surrounded by trees),

Drawing of the network maillé possible

Here the graphicversion of thenetwork maillé represented geographically:

Good, there, you cannot zoomer, but me with my software, I can (northwestern of the paved quotation) :

The unities of the ladders are degrees (those of the GPS, cards). It is pretty no? you will say...me it would be necessary there to be a beautiful card under.. it lacks the names...
ben one will see the next time (I have 2 hands, but an alone brain).
The description of the network maillé is given in a picture to the format ascii.

Attention, to the inverse one cards 2D of "hotspots " that one sees more and more on the net one, this card is a representation "flat" of a network in 3 dimensions, since Toulouse is in a valley. A link of 2KM has a "thickness" of 16M.

Simulation software

Here the network Inhabitant of toulouse that shows the links more easily feasible
This card is not updated, since she is done with "movable radio".

As the software that produces this card is limited to 50 wifistes, I rewrote it, I can give the information of "THE" (Line Of Sight) (View Line), and the power margin (in dB) remaining.

The numerical values corresponding to the quality of the signal, for all the links, are in a File text.
This file text, allows looking for the wifistes more accessible (and no more near).

The interet of this card is especially to show the impossible links (those that do not appear on the card).
The links in green Correspond to the better debit.
The links in yellow Correspond to the debit minimum (1Mb/s).

The antenna type that I used is: omnidirectionnelle. I exaggerated his "power" to simulate an one-way one. The liaisons "long" will be able to be done only with one-way.

Attention, the antennas SD27 are very directional,if one moves away oneself from 5DEGRÉS, one loses half of power (3DB in less).

I generated you a matrice of azimuths who shows all the possibilities for each to the case or you would put back in question the results of my software.

This that does my software

Here a synthesis of the files and actions of my software:

Prejudged on the distances

Here an example of liaisons between 2 wifistes:

On this example, well that clearscreen be nearer yves than dwayanu (4185M instead of 7498m),
It is more difficult to join since there is more signal losses (130.5dB instead of 123.4dB).

Here the Zones covered by each of the 40 first wifistes inhabitants of toulouse. (file GIF of 7MO, order alphabetique)

Good then that, this is when there is not buildings. See the case of the buildings:

Therefore in green that passes, in red that passes not. The waves to 2.4GHz do not like the curvatures
Morality in this case, more one is far, better that walks.

Do its purchases

with european.fr (street st michel) they sell equipment WiFi:
Files\SDL\ETSwww.selexium.fr/catalogue/f_cataloguecateg.php3L}} to choose catalogue=reseau
or by internet on Files\SDL\ETShflan.com/L}, Files\SDL\ETSonline.infracom-france.com/L}

attain a national forum that concerns the equipment choices

One can find the WRT54G withreseaudirect, because the shop OpenSeven to Balma not some sells more.
On the other hand they supply a adapter rp-tnc towardsfemale rp-sma, on which one will be able Connect a pigtail to go towards type N female, that connects itself on a SD27 or a ricoré, with a kind changer typical male male N. Ouf!

Therefore wrt54g (71.64€) + adapter (8.25€) + pigtail (14.32€) (of 1M) + changer (said 3€) + typical connector male N (climb on cable) for ricoré (3€) = 100€
Good, one can have prices on the connectique, if one orders grouped.

Problem: One is not gone through BNC to leave on 3 ricorés! (the connectique HYPER, which binz!)
Would be necessary them to find of the "t" rp-sma or of the "T" typeN, to do coupler.

The WiFi is not a long quiet river; -)

Otherwise, ya it pigtail that goes well (orthis one) (for ricoré in type N female or poorly) while awaiting to put 3 antennas directives.

The WRT54G with LDLC

Buy the connectors (male rp-sma to solder (for the pcmcia) and type N), see yellow orderlies:

Of other projects of maillage

The network citizen in Belgium follows almost it same objective that we (put to leaves that they are more optimists since they count to do a network of antennas of weak reach (omnidirectionnelles/150m), therefore with a strong density of wifistes to the km². You will find on this site all this that concerns the routage, Linux and the community aspect.

The network citizen of Villeneuve Tolosane

Various / to contact me

see the content of my catalog WiFi

On the subject of the "Waves received by thehuman body ", I would wish to do to invite myself by someone that lives opposite a building that has antennas GSM. History to see which quantity of waves I detect, svp: -)
Under the antennas through the ceiling, I not nothing detected.

My email: Yves Maguer (mailto:yves.maguer_SPAM@free.fr) (take off _SPAM)

If you have too much questions to put me, is more better to telephone me:
05 61 31 89 46 or 06 181 606 76 compose (33) for France
The prices to the kilo of the adsl (file Excel), the comparison (updated) performances.

Hotspots inhabitants of toulouse free

MIAM CLUB (Sandwicherie) 31, street Graduate 31000 TOULOUSE Telephones: 33 1 5 61 62 07 56 ( MIAM.CLUB@wanadoo.fr))

Our network project

This is what a network maillé?

This is a network or each uses relays to the others. There is not central element, or of centralized management.
This network does not belong to person, even to the state.
Each east owner of his equipment, for the decades to come!

While awaiting that one be sufficiently numerous on Toulouse to communicate with omnis (in 2015/2020!), one must use antennas unite (20 more powerful times) (that radiate on 18 degrees instead of 360).
There is two needs: - the movable PERCENTS, - the PERCENTS set up.
When the antennas directives (unite) will be some places, one will be able to link up the local PERCENTS to the network, thanks to the antennas omni origin.

I composed the preliminary sketch of the Specification of ournetwork, that will allow NEXT to select equipment, software and the adequate configurations. It is necessary for us a vote system electronic to do to evolve this document.

The right to the antenna is registered in the French right, select the section "The links", "The right to l'antenne"..

Our needs (movable or set up) rejoin when the movable ones use set up them to communicate between them or with internet, through the set up that have the adsl.

It is necessary therefore to decide for the PERCENTS set up, towards other which stationary PERCENTS will point the antennas unite.
This is a problem of topologie. I did a software that replies to this question.

Once the network sets up some places, movable PERCENTS will want to connect themselves to the network. It will be then necessary to sort for mailing their packages of 8-bit bytes towards the addressees (PERCENT set up, internet, movable PERCENTS in the same city). Of the Software exist (OLSR, TBRPF, AODV, ZRP) to assure this function. This is a problem of routage static (stations set up) and dynamic (movable stations).

Liberty,equality,brotherhood:the principles of a network maillé!!

To avoid that those that well placed (on high points) pay dearer than the others (because they would have more antennas to buy), I looked for the topologie of a network inhabitant of toulouse that:
- connects the maximum of persons on the city and especially to the surroundings (to privilege those that have few links),
- do only an alone network,
- tolerant to the breakdowns (lightning, move, took disconnected, telephones cut, etc),...
- allows a debit maximum for all (to avoid that an alone person that have a lot of links, not limit the debit)
- allows watering around oneself (function assured by the initial omnidirectionnelles).

The objective is to use a minimum of one-way antennas.
With 1 UNITED one, there has not any network, that of the pairs of links,
With 2 UNITED one, one all is linked up by a "wire" : not any redondance, minimal debit.
With 3 UNITED one, that walks!! (of or the bottom of orderly in "nest d' bee ")
Therefore 3 united one and a small omni, that does 4 antennas on an AP. The lost power is of 6DB.

In city, it is judicieux to put the small omni on a gone out (upright or left) and the 3 unite on the other gone out, all that while using the method diversity who will exploit eventual scrambling perceived by the small omni.

Here the specifications of the need for the problem of topologie (to the case or you would have an "algorithm" better than mine) :
Points divided up on a plan (file of the coordonées GPS of the wifistes), it is necessary to determine which liaisons (among the liaisons physiquement possible) it is necessary to preserve for that each not at all is linked up to THREE other points maximum.
Hypothesis: the liaisons physiquement possible allow that each not at all can join any other by a way (an alone network) (related graphe).
The following optimisations are asked:
1. The liaisons must be most possible shortest (points more near of a point),
2. The sum of the number of liaisons to join two points any (called way) must be most possible smallest,
3. Each not at all must have a number of liaisons more near of THREE.
4. Each not at all must have at least a way with other any not at all (an alone network) (the graphe must remain related).

It is desirable to be able to resolve this problem locally, without knowing the body of the points. (I did not there reach, but I did not really try).
The number of points being weak (on the order of 100 or 1000), the times of calculations are negligible and consequently are not a constraint.
My software takes 3 to 4MN on a pentium II to 450MHZ. The calculation time is linear to the number of not at all.
I verify the hypothesis while eliminating the isolated wifistes or the isolated networks, network more big, before the calculation.

In this specification, nearer that wants to say more easily joignable by WiFi!! This is the file text of the dBm, produces by software "movable radio" or produces by my software, that gives the liaisons physiquement possible.

It would seem that the problem classifies itself in the category of the " difficult optimisations " (one cannot obtain from optimum solution in a time polynomial, in of other terms, the resolution time exponentially increases with the size of the problem), thank-you to François Galéa and its colleagues.
My soft is near of the "algorithms métaheuristiques ".
I did not need to implement of "research taboo", but I do not know to say why! (I noted it).
My optimisation function consists of "to measure" the distance of the solution to the structure "bee nest".

My solution does not consist improving a tree found by a type algorithm Prim or Kruskal. I do not foresee to use this improvement type, of fear to fall in local maxima.

I do not foresee to try an exact method, of type "branch-and-bound", that allows obtaining THE optimum solution, in
Exploring all the possible solutions. (I am afraid of to leave in exponetielle).

On about 200 times that I did to turn my "algo", there was once or it did not converge. Since, I regulated a parameter to force (stronger) convergence. Ca must do 100 times that it turns as that, with 10 to 30 solutions to every time (I keep only the most optimum one).

Reading of the results of the calculation of the maillage

The result of the network mailléGive a list with 4 columns. The first one indicates the pseudo of the interested, the 3 others give the pseudo of the person to join to verify the link. The amount (of the 3 last columns) indicate the power margin (in dB), and azimuth (degrees advisable by a compass; of 0 (north) to 360) antenna to do the link.
In clear, that wants to say that more the values in dB are low, more it will be necessary to put of the under to buy professional antennas (60 Euros the SD27 in Spain). More the values students, more the debit student and more will be able to replace you the professional antennas by ricoré.

The cost of the antennas could be taken into account by an association, to which one would contribute at least once.
This would allow having lower prices, in the case of grouped orders.
To this day I evaluated the cost of the 3 antennas to 65EUROS by wifiste (with 7EUROS the antenna "ricoré").

The correspondence between received power and debit is (for my AP) :
11MBPS! -82 dBm
5.5Mbps! -87 dBm
2MBPS! -91 dBm
1MBPS! -93 dBm
Therefore, as in my file have sees that I simulated with "Threshhold reception (dBm) -93",
that wants to say that a power margin of 0DBI, will do a debit of 1MBPS with two SD27.
A power margin of 11DB (93-82) will do a link to 11MBPS theoretical with two SD27.
A ricoré done 11DBI.
I simulated with "Gain antenna (dBi) 18" (two SD27 by link, 3 links by wifiste)
A power margin of 18DB ( 93-82)+(18-11) will do a link to 11MBPS theoretical with a SD27 and a ricoré.
A power margin of 25DB ( 93-82)+(18-11)+(18-11) will do a link to 11MBPS theoretical with two ricoré.

And there, you will say me: "everyone has not 3 antennas in the file!". Ben yes, there has more isolated people than the others! YZONKA to prospect those that done obstacles to convert them to the WiFi!!

Why 18 dBi by antenna for simulation?
Because I took of the SD27 that done 24DBI. I added a small omni for each, that does 4 antennas. Therefore I divide the power by 2, 2 times. I lose 3DB to every division by 2, that done 6DB lost. 24 - 6 = 18 dBi. Voila!
For an isolated wifiste (that has only an antenna) my software is pessimistic. It is necessary therefore in this case to add 6DB.

-93DBMfor sensitiveness that does the 1Mb/s, and one saw in meeting that with this debit one can pass a video (800x600 25trames/s) in real time . What asks the people?!
And then if the links better (measured by the absolute value of the file to 4 columns), that can do more.

There is isolated people according to simulation "to seen" and to 18DBI:
On the 78 inventoried wifistes on Mondays December 1 2003 to 16:56,
fmoine, steph, fabre, arnolag, laronde, kartben, francis
Are not in the network. I would must take some counts the contournement of the obstacles in my software (as the does "movable radio") (60% of the first zone of released Fresnel, équivalente to THE, view line).
To 17KM, the first zone of Fresnel done 23M of ray max.
And then I removed 6DB to say that one shaved the roofs, I there maybe went a little strong! There has that the essays that count.

And then, two days after a new wifiste (Dolphin) registers itself, and hop, kartben more is not isolated! This is that the magie of the network!

A former outline of the network

A representation of the network maillé (when one was less than 50), that does an average of 2.91 antennas by wifiste inhabitant of toulouse.

My motivations

The League recalls to the French government his total opposition to all element of the law project that:
- would stretch to place the Net one under the authority of the CSA
- would impose a filtrage of the Net French
- would delegate police operations to the private sector
- would impose on the private sector to substitute itself to judicial authority
- would impose the censorship of the netsurfers before all judgement
- would deprive the numerical citizens of them right to a justice
independent and impartial
- by his fuzzy one or the non-definition of the concerned actors, would take an any actor of the Net one to censor or s'autocensurer itself as a precaution.
Files\SDL\ETSwww.odebi.org/deputes/0justice.htmlL }

The LEN partially is passed, here the result:

Pay virgin CD with a tax that finances the houses ofdiscs, and not to have the right to engrave these CD, I call that of the flight.

Pay CD that become illegible more and more quickly, (while the mp3 preserve themselves very well on hard disc), I call that of the flight.

Pay DVD that itself car destroy to the end of 8 hours, I call that of the flight. My discs microsillon continue to work, them.
If our cars exploded to the end of a year, that would relaunch the industry automobile, to dig....

Pay songs downloaded legally and not to be able to listen them on all the balladeurs, I call that of the flight.

Who must decide of this that you done with your money??

Me that never was invited to the evenings with eddy Barclay,
while on a CD that I buy 20EUROS, there is 1 Euro for the artist.

Yaka to boycott!

Ten Euro pennies the song; a day one will be able to pay directly the artists (micropaiements, squarelyevolution); a day, when one Will oblige the banks to do it. And again, if the securitydoes not evolve, I am not ready to go shopping in line!!
Not to confuse with the price of 1 Euro the song on the sites paying, that perpetuates the former system.

I recommend you a research motor semantic: Files\SDL\ETSwww.kartoo.com/L} oubien clusty
I dissuade the research motors for which the référencement of personal pages is necessarily paying: Files\SDL\ETSwww.yahoo.com/L}

What do you think about a store or it is necessary to pay to give something, and or one serves oneself free?
And well you there will not find that of advertising. This store will be called "internet".

"All sorts of things, too long for me to list here, are in expectation to be realized… there is new so many things to do, limited only by our imagination. And I think that it is important for does not import that going out of the school or university and worried of not to know what to do, to remember that today".

Tim Fool The, inventor of the "WorldWideWeb "