wireless network range issue

[cybermaniac]

hey guys

I'm doing an assignment for college, and there is one thing I am stumped on.

Basically I have to provide wireless signal to 4 floors.

Each floor is 150m x 150m, with 8m floor height.

Basically 3 floors will have dividing sections, and the basement shall not.

I am considering the following, from the server room (3rd floor (including basement)), I shall be having a wired network going to the wireless transievers (APs), which shall be G MIMO (not choosing N due to compatability issues on certain older laptops and device, and the other issue is that if i stay with G technologies, it will also work extremely well with SISO adapters).

Basically my question is this:

1. Do you think I will need a bigger antenna on each floor to push the signal the entire 150m (as i've got a sneaky feeling that the max (useful) range will be approx 40-60m)

2. IF I indeed choose to/have to use a higher dbi antenna, how do I stop the signal from going beyond my chosen target area (and having problems with potential stumblers). Also remember, that being in a theoretical business environment, modifying the router's firmware to allow for antenna power modification is out of the question).

thanks guys

Alex

 

[benco]

sorry for my english ,but you can use the mikrotik routerboard Rb433AH or better RB600A with the four mini-.Pci slots for wifi cards.You can use wifi cards

"WNC DCMA-82 (CM11) miniPCI, Atheros AR5214, 802.11 a/b/g, 2,4 GHz a 5G"out power 200mW and you can use four sector antenna.it´s by my opinion

 

[nathan]

is this just for course work? Do budgets matter?

Personally i'd go for a managed solution, something like the following (netgear are one of the cheaper ones);

http://www.ebuyer.com/product/136618

then buy the light access points about around £100 each. I'm nearing the decision to only install managed wireless in our schools/businesses now.

 

[benco]

you can see this page

xxx.routerboard.com/comparison.html

there are the price about router board and parameters.

every routerboard has the licence 4 or 5

about licence levels+price

wiki.mikrotik.com/wiki/Software_levels

internet provider use /in our towns/ WDS system for wifi between their AP´s at 5Ghz in licence zone /CFS/ and their use to clients PPPoE .

I have two router 433 and 411 distance about 1000 meters and ping <1ms at 5GHz

 

[ionicle]

couple of wireless access points to extend the signal spread out should do it well

 

[mrapoc]

How about sticking one to the roof of a floor?

Maybe that would be enough to cover the floor its on, and the above floor?

 

[benco]

I´m waiting for the mikrotik 493AH and 3 stocks wifi R52H.And I answer you on your question , becouse I will use first R52H -internet provider PPPoE

second R52H -AP to AP distance 200m at 2,4GHz

third R52H I use at home network over two floors and

I try to use 5 db antena

I see it next week

 

[nathan]

you should really try to do a survey, use netstumbler to do a rough one. You can spend hours and hours thinking about the best hardware. But your gonna get jack if there's loads of interference!

 

[benco]

I don´t say ,that this hardware is best of all.I´m using this hardware.you don´t believe , you can see it

/219.148.108.190

there are rb 411 and rb433